Answer:
1/3
Step-by-step explanation:
4(-1)+8y=20 how do i solve this ?
Answer: y = 3
Step-by-step explanation:
4(-1)+8y=20
negative * positive = negative
-4+8y=20
add 4 on both sides to isolate 8y
8y = 24
divide each side by 8
y = 3
Answer:
[tex]y=3[/tex]
Step-by-step explanation:
Step-By-Step on how to solve for y is in the attached picture.
Hope this helps! :)
factorise completely 3m^2-48
Answer:
3 (m^2 - 16)
Step-by-step explanation:
factoring means taking out a common multiple of all the terms in the expression
in this case, if you multiply 3 and m^2, 3 and -16, you would get 3m^2-48
so you take the three and put it outside of the parenthesis that contains the factored terms
this leaves you with 3 (m^2 - 16)
A rectangle has an area of 16.cm do you know its length?
Need help pls ❤️ need a answer
solve the system using elimination.
3x+3y=27
x-3y=-11
If i ate 20 candy bars and 40 more what do i have
Answer:
Diabetes
Step-by-step explanation:
By consuming that much candy your blood sugar levels would skyrocket causing you to get diabetes.
A line passes through (–2, –3) and has a slope of
−
3
4
. Which is an equation of the line?
Answer:
y = 3x + 3
Step-by-step explanation:
Given parameters;
Coordinates of the line;
(-2, -3)
Slope of the line = 3
Unknown:
Equation of the line = ?
Solution:
The equation of any straight line is often expressed as;
y = mx + c
y and x are the coordinates
c is the intercept
Now insert values of y, x and m to find c;
-3 = 3(-2) + c
-3 = -6 + c
c = -3 + 6 = 3
The equation of the line is;
y = 3x + 3
Help me with this.
x+1=2
- -
6 5
Step-by-step explanation:
x/6+1/5=2
30(x/6+1/5)=30(2)
5x+6=60
5x=60-6
5x=54
divide both sides by 5
therefore, x is equal to 10.8
what do we call the point in the coordinate system?
A.abcissa
B.ordinate
C.quadrants
D.ordered pair
8 - (7/10)t = 6 - (1/5)t
Answer:
t = 4
Step-by-step explanation:
Solve for t:
8 - (7 t)/10 = 6 - t/5
Hint: | Put the fractions in 8 - (7 t)/10 over a common denominator.
Put each term in 8 - (7 t)/10 over the common denominator 10: 8 - (7 t)/10 = 80/10 - (7 t)/10:
80/10 - (7 t)/10 = 6 - t/5
Hint: | Combine 80/10 - (7 t)/10 into a single fraction.
80/10 - (7 t)/10 = (80 - 7 t)/10:
1/10 (80 - 7 t) = 6 - t/5
Hint: | Put the fractions in 6 - t/5 over a common denominator.
Put each term in 6 - t/5 over the common denominator 5: 6 - t/5 = 30/5 - t/5:
(80 - 7 t)/10 = 30/5 - t/5
Hint: | Combine 30/5 - t/5 into a single fraction.
30/5 - t/5 = (30 - t)/5:
(80 - 7 t)/10 = (30 - t)/5
Hint: | Make (80 - 7 t)/10 = (30 - t)/5 simpler by multiplying both sides by a constant.
Multiply both sides by 10:
(10 (80 - 7 t))/10 = (10 (30 - t))/5
Hint: | Cancel common terms in the numerator and denominator of (10 (80 - 7 t))/10.
(10 (80 - 7 t))/10 = 10/10×(80 - 7 t) = 80 - 7 t:
80 - 7 t = (10 (30 - t))/5
Hint: | In (10 (30 - t))/5, divide 10 in the numerator by 5 in the denominator.
10/5 = (5×2)/5 = 2:
80 - 7 t = 2 (30 - t)
Hint: | Write the linear polynomial on the left hand side in standard form.
Expand out terms of the right hand side:
80 - 7 t = 60 - 2 t
Hint: | Move terms with t to the left hand side.
Add 2 t to both sides:
2 t - 7 t + 80 = (2 t - 2 t) + 60
Hint: | Look for the difference of two identical terms.
2 t - 2 t = 0:
2 t - 7 t + 80 = 60
Hint: | Group like terms in 2 t - 7 t + 80.
Grouping like terms, 2 t - 7 t + 80 = 80 + (2 t - 7 t):
80 + (2 t - 7 t) = 60
Hint: | Combine like terms in 2 t - 7 t.
2 t - 7 t = -5 t:
-5 t + 80 = 60
Hint: | Isolate terms with t to the left hand side.
Subtract 80 from both sides:
(80 - 80) - 5 t = 60 - 80
Hint: | Look for the difference of two identical terms.
80 - 80 = 0:
-5 t = 60 - 80
Hint: | Evaluate 60 - 80.
60 - 80 = -20:
-5 t = -20
Hint: | Divide both sides by a constant to simplify the equation.
Divide both sides of -5 t = -20 by -5:
(-5 t)/(-5) = (-20)/(-5)
Hint: | Any nonzero number divided by itself is one.
(-5)/(-5) = 1:
t = (-20)/(-5)
Hint: | Reduce (-20)/(-5) to lowest terms. Start by finding the GCD of -20 and -5.
The gcd of -20 and -5 is -5, so (-20)/(-5) = (-5×4)/(-5×1) = (-5)/(-5)×4 = 4:
Answer: t = 4
The probability of choosing a penny from the 1980s from the bag of pennies without looking is StartFraction 3 over 40 EndFraction. Which term best describes this probability? impossible unlikely likely certain
Answer:
Unlikely
Step-by-step explanation:
Answer:
B.
Step-by-step explanation:
took test
steve saw 313 birds during a bird-watching trip to Yellowstone National park. he observes 15 more trumpeter swans than sandhill cranes. he saw twice as many mountain chickadees as ducky grouses. how many birds of each type did steve observe if he saw half as many trumpeter swans as ducky grouses
Answer:
trumpeter swans = 41sandhill cranes = 26mountain chickadees = 164ducky grouses = 82Step-by-step explanation:
Total number of birds = 313
trumpeter swans = ssandhill cranes = cmountain chickadees = mducky grouses = gWe have equations below based on given:
s = c + 15
m = 2g ⇒ m = 2(2s) = 4s ⇒ m = 4(c + 15)g = 2s ⇒ g = 2(c + 15)s + c + m + g = 313Substituting m, g and s as above in the last equation and finding the value of c:
c + 15 + c + 2(c + 15) + 4(c + 15) = 3137(c + 15) + c = 3137c + c + 105 = 3138c = 313 - 1058c = 208c = 208/8c = 26Then finding the other values:
s = 26 + 15 = 41g = 2s = 2*41 = 82m = 2g = 2*82 = 164what is the intercept for y - 6 = 2 (3x-4)
Instructions: Use proportions to answer each of these word problems. You can use a calculator.
1
If 2 liters of sea water contain 70
grams of salt, how much salt is in 32
liters of sea water?
2 If it takes 930 kg of food to feed a pair
of elephants for 3 days, how much food
would you need to feed them for a week?
70 grams
n grams
3
2 liters
32 liters
If a fuel efficient car can go 210 miles
on 4 gallons of fuel, how far can it go
on 12 gallons?
70 x 32 = 2xn
2,240 = Xxn
2 &
If a farmer gets 340 bushels of corn
from 2 acres of land, how many bushels
can they get from 15 acres?
n = 1,120 grams
5
A factory can make 20 toasters in a
half-hour (0.5 hrs) How many toasters
can the factory make in 6.5 hours?
6
On a scaled drawing, a building measures
4.5 cm tall. If the scale of the drawing is
25 meters per 2 cm, how tall is the actual
building?
1. The ratio of the measures of the sides of a triangle is 5:6:8, and
its perimeter is 159.6 mm. Find the measure of the shortest side of
the triangle
Answer:
42mm
Step-by-step explanation:
Let the shortest side of the triangle be 5x, the middle side be 6x, and the longest side be 8x.
5x+6x+8x = 159.6
19x = 159.6
x = 159.6 ÷ 19
x = 8.4
Shortest side of triangle (5x) = 8.4 × 5
= 42
A submarine dives below the surface, heading downward in six moves. If each move downward was 180 feet, where is the submarine after it is finished diving?
Rewrite this expression
(x+y)(x+y)(x+y)(x+y)(x+y)(x+y)
Answer:
Its actually 6x + 6y because your adding all like variables to simplify the expression and since theirs 6x and 6y the equation becomes 6x + 6y
Can yall help me? with this question pleasee
Answer:
There is no answer
Step-by-step explanation:
Please attach a picture and I will help you!
Answer:
There is no question
In a class election, 30 students voted for Emerald and
15 students voted for Beau. What percent of students
voted for Beau?
( please help my teacher won’t let me leave if I don’t get this done)
(-6)(2) + (-8÷4) what is the anwer?
Answer:
-14
Step-by-step explanation:
(-6)(2)= -12
(-8÷4)= -2
-12+(-2)= -14
Raymond just got done jumping at Super Bounce Trampoline Center. The total cost of his session was \$43.25$43.25dollar sign, 43, point, 25. He had to pay a \$7$7dollar sign, 7 entrance fee, and \$1.25$1.25dollar sign, 1, point, 25 for every minute he was on the trampoline.
Answer:
29 minutes
Step-by-step explanation:
Given
[tex]Total = \$43.25[/tex]
[tex]Entrance\ Fee = \$7[/tex]
[tex]Per\ Minute = \$1.25[/tex]
Required
Determine the number of minutes (t) that he was on the trampoline.
This can be expressed as:
[tex]Total\ Payment = Entrance\ Fee + Amount\ per\ minute * t[/tex]
Where t represents the number of minutes
Substitute values for Total, Entrance Fee and Amount per minute
[tex]43.25 = 7 + 1.25 * t[/tex]
[tex]43.25 = 7 + 1.25t[/tex]
Solving further to get the value of t, we have:
[tex]1.25t = 43.25 - 7[/tex]
[tex]1.25t = 36.25[/tex]
[tex]t = 36.25/1.25[/tex]
[tex]t = 29[/tex]
Answer:
29 minutes
Step-by-step explanation:
7 + 1.25t = 43.25 is the equation
How did I solve this?
I divided those two and that is how you get the equation
In total is 29 minutes
I did the Khan and it was right!
Hope this helps :)
Renate wins a $20 gift card to an online music site. After Renetta purchased 16 songs, the gift card has a remaining balance of zero dollars. Which equation represents the relationship between Y, the remaining balance on Manetta‘s gift card, and X, the number of songs purchased?
Answer:
b. 5x + 4y = 80
Step-by-step explanation:
Let us assume the remaining balance left be Y
and, the number of songs purchased be X
Given that
Wins a gift card of $20
And, the songs purchased is 16
Now if we take the fraction
= 20 ÷ 16
= 5 ÷ 4
So if we reverse this fraction
So it could be 5x and 4y
And, the amount that would come is
= $20 × 16 ÷ 4
= 80
So, the equation is 5x + 4y = 80
Hence, the correct option is b.
uses long wavelength energy in the electromagnetic spectrum to reflect waves to a receiver and form images from space
Step-by-step explanation:
Since the last reflecting off glass
-10=-10+ 7m
What is the answer?
Answer:
0 = 7m
0 = m
m = 0
It is 0 because first you would have to cancel -10 on both of the sides then divide both of the sides by 7 then switch the sides which is 0
The result of the equation -10 = -10 + 7m is m = 0
The given equation is:
-10 = -10 + 7m
Add 10 to both sides of the equation
-10 + 10 = -10 + 10 + 7m
0 = 7m
Rewrite the equation as:
7m = 0
Divide both sides of the equation
7m/7 = 0/7
m = 0
This is because 0 divided by any number is 0
Therefore, the result of the equation -10 = -10 + 7m is m = 0
Learn more here: https://brainly.com/question/19639998
what is the name of this shape?
Answer:
this shape consists of a square and triangle
The shape is a Pentagon ... but that won't help get the perimeter or area. you'll have to find the areas and perimeters of both the square and triangle and then add them for the final answer.
Area of figure = area of square + area of triangle
=> Area of Square = a² (a = side)
side = 3.5 cm ...so...
Area of square = a²
= 3.5 × 3.5
= 12.25 cm²
=> Area of Triangle = ½ × base × height
= ½ × 3.5 × 1.64
= 2.87cm²
Area of figure = area of square + area of triangle
Area of figure = 12.25 + 2.87
= 15.12 cm²
Perimeter of figure = P of square + P of triangle
=> P of square = 4a
= 3.5 × 4
= 14cm
=> P of isosceles triangle = 2a + base
= 2 × 2.4 + 3.5
= 4.8 + 3.5
= 8.3cm
Total perimeter of figure = P of square + P of triangle
Total perimeter = 14 + 8.3
= 22.3 cm
Write a percent equation that can be used to solve the following problem: 25 is what percent of 350?
A. n = 25 × 350
B. 350 = p × 25
C. 0.25 = p × 350
D. none of these
NEED ANSWER ASAP will Mark as BRAINLIEST
17. Find the value of x.
(5x + 4)
(7x + 4)
(4x + 9)
(4x + 1)
(9x-6)
Answer:
x= -2
Step-by-step explanation:
Move all the terms to the left.
Add all the number together and then add the variables.
Get rid of parenthesis
Move all terms containing x to the left.
The value of x obtained for given diagram is, 12
What is an angle ?An angle is a mathematical term which we can defined, when two straight lines or rays meets at a common endpoint. The common point is called the vertex of an angle. The word angle comes from a Latin word named ‘angulus,’.
Interior angles:- The inner angle made by the intersection of two polygonal sides.
Exterior angles:- The outer angle made by the intersection of two polygonal sides.
Given that,
All the exterior angles are,
(5x + 4), (7x + 4),(4x + 9),(4x + 1),(9x-6)
It is known that,
Sum of Interior angle & Exterior angle is equal to 180°
So we can calculate all the Interior angles,
180°- (5x + 4), 180°-(7x + 4), 180°-(4x + 9), 180°-(4x + 1), 180°-(9x-6)
Formula for sum of all the Interior angles = (2n-4)×90
So, n=5
Sum of all the Interior angles = 540°
[180°- (5x + 4)] + [180°-(7x + 4)]+[180°-(4x + 9)]+[180°-(4x + 1)] +[180°-(9x-6)] = 540
900- 29x- 12 = 540
x = 12
Hence, The value of x is, 12
To know more about angle check:
https://brainly.com/question/28451077
#SPJ2
please help :).
thank u
Answer:
B. No because it is not a straight line.
Be safe and wear a mask my friend. It's a sick world out there!
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
because the function graph have to cut the x-inter ones so here you go broooo wish you get it right
The number of bacteria at the beginning of an experiment was 30 and the bacteria
grow at an hourly rate of 1.4 percent. Using the model given by A(t) = A0e
kt, estimate
the number of bacteria, rounded to the nearest whole number after 20 hours.
Answer: what is the question and answer choices
Step-by-step explanation:
Shawna cuts out a square piece of card stock paper for a project. Her partner Tanisha wants to check to see if the cutout is actually a square. Tanisha checks to see if the diagonals are congruent. Does this determine if the piece of card stack paper is an actual square? Justify your answer.
Answer:
Yes
Step-by-step explanation:
Reason is that a square has all the aspects of a parallelogram a rectangle and a rhombus. It gets its congruent diagonals from the rectangle which is congruent
A jar contains 12 red marbles numbered 1 to 12 and 10 blue marbles numbered 1 to 10. A marble is drawn at random from the jar. Find the probability of the given event. (a) The marble is red
Answer:
6/11Step-by-step explanation:
Step one:
given data
sample space
red marbles= 12
blue marbles= 10
sample size= 12+10
sample size= 22
Step two:
Required
Find the probability of the given event. (a) The marble is red
Let the probabiilty be P(R)
P(R)= 12/22
P(R)= 6/11