carla, bev, and ashley took their unit 2 math test. carla made an 80 and bev made a 75. what was ashleys score on the test if their average was 78.
Answer:
Ashley = 79
Step-by-step explanation:
[tex]Average=\frac{Carla+Bev+Ashley}{3}=78\\\\\frac{80+75+Ashley}{3}= 78 \\\\\frac{155+Ashley}{3}=78\\\\\frac{155+Ashley}{3}*\frac{3}{1} =78*3\\\\155+Ashley=234\\[/tex]
Subtract 155 from both sides;
Ashley = 79
If f(x) = x - 4 and g(x) = 3x + 5, find (f + g)(x).
a) 4x + 9
b) 2x + 9
c) 2x - 1
d) 4x + 1
Answer:
4x+9
Step-by-step explanation:
x-4 +3x+5
x+3x+5+4=4x+9
I don’t know how to set it up nor do it please help me
Answer:
The value of x is 3
Step-by-step explanation:
∵ Quadrilateral ABCD is congruent to quadrilateral JKLM
∴ AB = JK and BC = KL
∴ CD = LM and AD = JM
∵ BC = 8x + 7
∵ KL = 31
∵ BC = KL
→ Equate their right sides
∴ 8x + 7 = 31
→ Subtract 7 from both sides
∵ 8x + 7 - 7 = 31 - 7
∴ 8x = 24
→ Divide both sides by 8 to find x
∴ [tex]\frac{8x}{8}[/tex] = [tex]\frac{24}{8}[/tex]
∴ x = 3
∴ The value of x is 3
X^2-5x+6=0 quadratic form
Answer:
x = 3,2
Step-by-step explanation:
solve for x by finding a,b,c and then apply the quadratic formula.
Answer:x
=
−
3
x
=
−
2
Explanation:
The quadratic formula is:
⇒
x
=
−
b
±
√
b
2
−
4
a
c
2
a
for a quadratic of the form
a
x
2
+
b
x
+
c
.
We have
a
=
1
,
b
=
5
, and
c
=
6
.
x
=
−
5
±
√
5
2
−
4
(
1
)
(
6
)
2
(
1
)
x
=
−
5
±
√
25
−
24
2
x
=
−
5
±
√
1
2
x
=
−
5
±
1
2
Hence,
x
=
−
6
2
=
−
3
and
x
=
−
4
2
=
−
2
I'm not sure why you wanted to use the quadratic formula, but you could just factor the quadratic:
x
2
+
5
x
+
6
=
(
x
+
3
)
(
x
+
2
)
=
0
x
+
3
=
0
→
x
=
−
3
and
x
+
2
=
0
→
x
=
−
2
Step-by-step explanation:
if you know the answer to this PLEASE HELPPPP MEEE
Answer:
-2, -1, 1, 3
Step-by-step explanation:
Range is the amount so that is why it is the answer
How many factors of 100 are also multiples of 5?
Let us write the factors of 100. A factor of 100 can only be a multiple of five if it is divisible by five.
Divisibility rule of 5: A number can only be divisible by five if the ones digit of the number is a five or 0.Factors of 100 ⇒ numbers divisible by 100 ⇒ 1, 2, 4, 5, 10, 20, 25, 50, 100
When checking each factor of 100;
1 is not a multiple of 5 ⇔ not divisible by 5.2 is not a multiple of 5 ⇔ not divisible by 5.4 is not a multiple of 5 ⇔ not divisible by 5.5 is a multiple of 5 ⇔ divisible by 5.10 is a multiple of 5 ⇔ divisible by 5.20 is a multiple of 5 ⇔ divisible by 5.50 is a multiple of 5 ⇔ divisible by 5.100 is a multiple of 5 ⇔ divisible by 5.⇒ Five factors are multiples of 5.
Therefore, five factors of 100 are multiples of 5.
what is one thousandth less than 0.029
Answer:
0.0009
Step-by-step explanation:
if three fourth of a number is one-thenths, what is the number please show with steps first person answer u will get branliest!!!
Let x be the number we are searching for.
(3/4)x = 1/10
Find the slope of the line that passes through (5, 13) and (9, 10).
Simplify your answer and write it as a proper fraction, improper fraction, or integer.
Answer:
The slope between (5, 13) and (9, 10) is:
[tex]m=-\frac{3}{4}[/tex]Step-by-step explanation:
Given the points
(5, 13)(9, 10)Finding the slope between (5, 13) and (9, 10)
[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]m=\frac{10-13}{9-5}[/tex]
[tex]m=-\frac{3}{4}[/tex]
Therefore, the slope between (5, 13) and (9, 10) is:
[tex]m=-\frac{3}{4}[/tex]This table shows the times it took four students to complete a 40-meter race.
Race Times
Student
Time
(in seconds)
Joe
13.07
Justin
13.6
Maria
13.06
Melinda
13.7
Which statement about these times is true?
A: 13.7 > 13.07
B: 13.07 > 13.6
C: 13.6 > 13.7
D: 13.06 > 13.07
3 n - 5 p + 2 n = 10 p for n
Answer:
What do you mean
Step-by-step explanation:
Which of the following is a prime number between 40 and 50? A. 41 B. 45 C. 44 D. 49
Answer:
A.41
Step-by-step explanation:
WILL GIVE BRAINLIEST
Consider the line that passes through each pair of given points, and decide what type of slope the line has.
(2, 4) and (5, 1)
(-7, 8) and (-7,0)
(6,-3) and (-4,-3)
(3,5) and (-1,2)
Answer:
2.) undefined slope 3.) zero slope (i'm not sure what 1 and 4 are, sorry!)
Step-by-step explanation:
undefined slope has the same x-coordinate and the denominator becomes 0. it also is a vertical line. for a zero slope, it has the same y-coordinate and the numerator is 0. this is a horizontal line. *this is my first response so if i am wrong, that is embarrassing*
What is the image point of (1, 4) after a translation left 5 units and down 5
units?
Answer:
(-4,-1)
All you have to do to find it is subtract x by 5 and subtract y by 5. :)
Which list is in order from least to greatest?
A. 2/3, 29%, 1/4 , 0.06
B. 2/3, 1/4, 29%, 0.06
C. 0.06, 1/4, 29%, 2/3
D. 1/4, 2/3, 0.06, 29%
Answer:
c
Step-by-step explanation:
2/3 converts to 0.66666667, 66.67%
1/4 converts to 0.25 , 25%
0.06 converts to 6%
So the order from least to greatest would be 0.06 , 1/4 , 29% , 2/3
Find the area. Simplify your answer.
3x-3
3x+6
Answer:
3x^2 + 7x - 18
Step-by-step explanation:
PLEASE HELP! I WILL GIVE BRAINLIEST! pleeeaaaasssseee!
Solve by factoring
Answer:
n = -35/1301
Step-by-step explanation:
1225n+76n=1301n=-35
n = -35/1301
Sam's dad says he will pay a fraction of his mobile phone bill. Would Sam rather his dad paid 1/2 of the bill or the 1/3?
Answer:
matters
Step-by-step explanation:
if sam doesnt want his dad to spend a lot of money on him then 1/3
but if sam wants to pay less then 1/2
1/2 is more then 1/3
Which of the following correctly shows the re-grouping strategy for solving 57 x 18?
50 x 10; 7 x 10; 10 x 8; 7 x 8
50 x 10; 7 x 10; 50 x 8; 7 x 8
50 x 10; 7 x 50; 50 x 8; 7 x 8
10 x 8; 7 x 10; 50 x 8; 7 x 8
Answer:
map
Step-by-step explanation:
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
With the regrouping strategy, we get,
50 x 10; 7 x 10; 50 x 8; 7 x 8
Option B is the correct answer.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
57 x 18
This can be written as,
(50 + 7) x (10 + 8)
Simplifying we get,
(50 x 10) + (50 x 8) + (7 x 10) + (7 x 8)
Now,
With the regrouping strategy, we get,
(50 x 10)
(50 x 8)
(7 x 10)
(7 x 8)
Thus,
With the regrouping strategy, we get,
50 x 10; 7 x 10; 50 x 8; 7 x 8
Option B is the correct answer.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
On a coordinate plane, 2 straight lines are shown. The first solid line has a negative slope and goes through (negative 2, 3) and (0, negative 1). Everything to the left of the line is shaded. The second dashed line has a negative slope and goes through (0, 2) and (1, 0). Everything to the right of the line is shaded.
Which inequality pairs with y≤−2x−1 to complete the system of linear inequalities represented by the graph?
y −2x+2
y 2x−2
Answer:B i think......
Step-by-step explanation:
Answer: It's y>-2x+2
Kellie ran 1/5 mile in 1 1/2 minutes at this rate , how long would it take her to run 1 mile
Answer:
PLZ MARK BRAINLIEST
The answer is 7.5 miles or 7 1/2.
Step-by-step explanation:
1 1/2 times 5= 7 1/2 or 7.5 miles
Answer:
7 1/2 min
Step-by-step explanation:
1.5 x 5 = 7.5 She ran 1 mile in 7 1/2 min
A number t multiplied by −4 is at least −25.
Answer:
[tex]t\leq 6.25[/tex] in decimal form
[tex]t\leq \frac{25}{4}[/tex] in fractional form
Step-by-step explanation:
-4 times a number t is greater than or equal to - 25. This is what they mean by at least.
[tex]-4t \geq -25[/tex]
Solve for t.
[tex]t\leq \frac{-25}{-4}[/tex] , we flip the inequality because we are dividing by a negative number.
[tex]t\leq 6.25[/tex]
which line is parallel to y=8x+11?
Answer:
Any line with a slope of 8 is parallel to y = 8x + 11. Some examples are:
y = 8x + 5
y = 8x + 1000
y = 8x +9
It doesn't matter what the y-intercept as long as the slope remains the same for a parallel line.
Answer:
Like the other person said, any line that has the same slope (8) will be parallel.
Step-by-step explanation:
What is the equation of the line shown in the graph?
Drag and drop the expressions to write the equation of the line in slope-intercept form.
y = Response area + Response area
A function graph of a line with two points (-3,-2) and (-1,2) with an x axis of negative five to five and a y axis of negative five to five
9514 1404 393
Answer:
y = 2x + 4
Step-by-step explanation:
You have the graph, so you can read the slope and y-intercept from it. The line goes up 2 units for each unit to the right, so the slope is ...
slope = rise/run = 2/1 = 2
The y-intercept is where the graph crosses the y-axis, at y=4.
The slope-intercept form of the equation for a line is ...
y = mx + b
where m is the slope (2) and b is the y-intercept (4). Your equation is ...
y = 2x +4
Answer: First blank; -x
second; -2
Step-by-step explanation:
Please solve with elimination
5x + 9y =-5
3x -8y = -3
help I will give brainliest
please show work
Answer:
Step-by-step explanation:
5x+9y=-3 Multiply both sides by 8
40x+72y=-24
-53x-8y=-3 Multiply both sides by 9
-477x -72y= -27
sum the equations vertically to eliminate one variable
40x+72y= -24
-477x-72y= -27 (the y cancels out )
-477x =-51 (-24 + -27=-51)
-477x=-51 / -477 divide both sides by -477
x =51/437
5x 51/437=9y= -3 substitute the value of x
y= -174 /437
(x,y) = (51/437, -174/437)
Whats the answer help please
Need now thank you
Correct answer
Will give brainliest
Answer:The slope is 6/7
Step-by-step explanation:
when finding the slope you will need to move the 6x to the other side of the equation by subtracting which gives you 7y=14-6x and all that is left is to divide by 7 which gives y=14-6/7y
Answer:
6x - 7y = 14
⇔ 6x - 14 = 7y
⇔ 6/7.x - 2 = y
=> the slope is 6/7
Step-by-step explanation:
Jeff ordered 5 pizzas for his daughters birthday
party. Each pizza has 8 slices. At the party, 50%
of the pizzas were eaten. When the party was
over, Jeff ate 20% of what was left. How many
did Jeff eat?
Answer:
4 slices.
Step-by-step explanation:
5 x 8 = 40. 40 slices of pizza divded by 2 since 50% = 2.
20 slices, 20% of 20 slices or 20 in general is 4
Find the slope of the line through the given points.
(-9, -7) and (-11, -13)
Alana runs 4 laps around the track in 10 minutes. If Alana runs 17 laps at the same rate how long does it take her
Answer:
42 minues 5 seconds to do 17 laps.
Step-by-step explanation:
it takes her 2 minuetes and 50 seconds to do 1 lap if you multiply 2.5x17=
42 munites and 5 secondesto do 17 laps
Answer:
It would take 42.5 min
Step-by-step explanation:
4/10 = 2.5(unit rate for every lap it takes 2.5 min)
17 x 2.5 = 42.5
Halla tres enteros impares consecutivos tales que 3 veces el entero del medio es 5 mas que la suma del primero y el tercero.
Responder:
3, 5, 7
Explicación paso a paso:
Sean enteros impares consecutivos:
x, x + 2, x + 4
3 (x + 2) = (x + x + 4) + 5
3x + 6 = (2x + 4 + 5)
3x + 6 = 2x + 9
3x - 2x = 9 - 6
x = 3
Por lo tanto,
x = 3; (x + 2) = 3 +2 = 5; x + 4 = .3 + 4 = 7
(3, 5 y 7)