Answers
Answer:
x = 10
Step-by-step explanation:
DEC is a right angle, right angles equal 90 degrees
so this means 7x + 20 needs to equal 90
7 x 10 + 20 = 90
Related Questions
Sam has a total of 43 quarters and nickels in her purse. If her change is worth $7.75, how many nickels and how many quarters does Sam have?
Warning: This is Algebra 1
Answers
Answer:
i need help with this too\
Step-by-step explanation:
Let n=the number of nickels
q+n=43 This equations represents the total number of coins.
0.25q+0.05n=7.75 This equations represents her change totaling to $7.75.
Multiply the second equation by 100 to simplify the arithmetic.
q+n=43
25q+5n=775 Multiply the first equation by -5.
-5q-5n=-215
25q+5n=775 Add the two equation in which the n variable gets eliminated.
20q=560 Divide both sides by 20.
q=28 Substitute q=28 into the first equation and solve for n.
28+n=43
-28 -28
n=15 Therefore, she has 28 quarters and 15 nickels in her purse.
Hope this helps.
3(4−2x)=6(−x+2) how many solutions does this have?
Answers
Answer: it has 7 solutions
Step-by-step explanation:
i hope this helps
im running out of titles for these things but answer the question from below
Answers
Answer:
a=32.5
Step-by-step explanation:
6.50×5
you and your four friends . that equals to five people so five multiply by 6.50
Suppose that an individual has a body fat percentage of 12.9% and weighs 169 pounds. How many pounds of his weight is made up of fat? Round your answer to the nearest tenth.
Answers
Exact: 21.801 rounded to tenth
Someone please answer ASAP thank you
Answers
Answer:
[tex]\huge\boxed{\sf 2}[/tex]
Step-by-step explanation:
Since these triangles are similar, we'll use proportion to find the unknown side.
[tex]\sf \frac{25}{10} = \frac{5}{?}[/tex]
Cross Multiply
[tex]\sf ? * 25 = 10*5[/tex]
Divide 25 to both sides
[tex]\sf ? = 50/25\\\\? = 2[/tex]
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AnonymousHelper1807In ΔWXY, y = 88 cm, x = 85 cm and ∠X=70°. Find all possible values of ∠Y, to the nearest 10th of a degree.
Answers
Answer:
All possible values of ∠Y are 76.6° and 103.4°
Step-by-step explanation:
In Δ WXY
∵ x is the opposite side of ∠X
∵ y is the opposite side of ∠Y
→ By using the sine rule
∴ [tex]\frac{x}{sin(X)}[/tex] = [tex]\frac{y}{sin(Y)}[/tex]
∵ x = 85 and y = 88
∴ m∠X = 70°
→ Substitute them in the rule above
∴ [tex]\frac{85}{sin(70)}[/tex] = [tex]\frac{88}{sin(Y)}[/tex]
→ By using the cross multiplication
∴ 85 × sin(Y) = 88 × sin(70)
→ Divide both sides by 85
∴ sin(Y) = 0.9728582427
∴ m∠Y = [tex]sin^{-1}[/tex](0.9728582427)
∴ m∠Y = 76.62037845
→ Round it to the nearest tenth
∴ m∠Y = 76.6°
→ The other value of ∠Y is the obtuse angle supplement of ∠Y
∴ m∠Y = 180 - 76.6
∴ m∠Y = 103.4°
∴ All possible values of ∠Y are 76.6° and 103.4°
Answer:
No Possible triangles
Step-by-step explanation:
PLEASE HELP WILL MARK BRAINLIEST PLEASE I BEG YOU IM REALLY STRUGGLING WORTH 100 POINTS
Answers
Answer:
A. 11+11+3. The two longer sides are 11 feet, and the one shorter side is 3 feet.
b. yes it is because the isoscele tringle is 25 feet in perimeter.
the equallateral triangle is 24 feet in perimeter.
Identify the ordered pair of C. (ex; (5,-1))
will give brainly if answered correctly! :)
Answers
Answer:
(5,0)
Step-by-step explanation:
lol
Answer
(5,-1) is the c
Find the mean, median, and mode of the listed numbers.
3 2 7 7 3 8 5 7 2 8
What is the mean? Select the correct choice below and, if necessary, fill in the answer box within your choice.
O A. The mean is
(Type an integer or a decimal. Round to one decimal place as needed. Use a comma to separate answers as needed.)
OB. There is no mean.
What is the median? Select the correct choice below and, if necessary, fill in the answer box within your choice.
O A. The median is
(Type an integer or a decimal. Round to one decimal place as needed. Use a comma to separate answers as needed.)
OB. There is no median.
What is(are) the mode(s)? Select the correct choice below and, if necessary, fill in the answer box within your choice.
O A. The mode(s) is(are)
L
Answers
Step-by-step explanation:
mean: (3 + 2 + 7 + 7 + 3 + 8 + 5 + 7 + 2 +8)/10 = 5.2
median: 2, 2, 3, 3, 5, 7, 7, 7, 8, 8 hence median is (5 + 7) / 2 = 6
mode: 7
Topic: mean median mode
If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!
Help now pls give the answer in metres squared
Answers
Answer:
138 meters squared
Step-by-step explanation:
Area of the shape
[tex] = \frac{1}{2} \times (14 + 9) \times 12 \\ \\ = \frac{1}{2} \times 23 \times 12 \\ \\ = 23 \times 6 \\ \\ = 138 \: {m}^{2} [/tex]
一7+12 *
what’s this answer?
Answers
Answer:
5
Step-by-step explanation:
Answer: 5
Step-by-step explanation: -7+12=5. So, 5 is the answer.
Helpppppppppppppppppppp‼️
Answers
Answer:
please I cannot see can you resend it
The graph shows how a store sells peppers by weight, at a constant price per pound.
Which of these statements is true?
Tell me if you can't see the picture!
Answers
What is the solution to the following equation? -32-8x=-7x+8(8x-4)
Answers
the answer to your question is x=0
X=0
−32−8x=−7x+8(8x−4)
−8x−32=−7x+8(8x−4)
−8x−32=−7x+64x−32
−8x−32=57−32
−8−32+32=57−32+32
−8=57
which of the ordered pairs is a solution of the following equation
5x-2y=20
Answers
We want to see which ordered pairs are a solution of the equation:
5x - 2y = 20
The ordered pairs are not given, so I will give a general answer, finding the general form of all the ordered pairs that are solutions.
We start with the equation:
5x - 2y = 20
First, we need to isolate one of the variables, let's isolate y.
2y = 5x - 20
y = (5/2)*x - 20/2
Then we get:
y = (5/2)*x - 10
From this, all the ordered pairs (x, y) that are solutions of this equation are given by:
(x, (5/2)*x - 10)
Then to get the points we just need to replace the "x" with numbers, for example for x = 0 we get the solution:
(0, (5/2)*0 - 10) = (0, -10)
For x = 1 we get the solution:
(1, (5/2)*1 - 10) = (1, -15/2)
And so on.
If you want to learn more, you can read:
https://brainly.com/question/12974594
What is the value if X and Y?
Answers
Hope I’m right!
It cost you $12 to start up your
new painting busness
You charge $45 per hour to paint.How many hours must you paint to have no less than $117?
Answers
Step-by-step explanation:
let no. of hours be x.
45x - 12 ≥ 117
45x ≥ 129
x ≥ 2.8667 (5sf)
therefore, 3 hours (round up to next whole number).
Topic: inequalities
If you like to venture further, do check out my insta (learntionary) where I regularly post useful math tips! Thank you!
PLEASE HELP RIGHT NOW!!!!!!!!!
Answers
Answer:
SAS postulate
Step-by-step explanation:
The triangles have two congruent sides and one congruent angle. The congruent angle is the included angle. This meets SAS criteria.
Hope this helps :-)
See also https://brainly.com/question/18898343
Image from aplustopper
MATH QUESTION - Please Help
Rachel spent $36.32 in the
grocery store. She paid the exact
amount and used exactly 4 bills and
4 coins. What bills and coins did
Rachel use?
Answers
Answer:
she used a $20 bill, $10 bill, $5 bill, $1 bill, 25 cents 5 cents, and 2 pennies
Step-by-step explanation:
Please Help
There wasn't any other directions other then this.
Answers
Answer:
a+b=c
Step-by-step explanation:
add a and b and thats c
Sales tax on a shirt is 0.07 times the cost of the shirt. The sales tax for a shirt is $1.26. Which equation could you use to find the cost, c, of the shirt before sales tax? A. 0.07 · c = 1.26 B. 0.07 · 1.26 = c C. 0.07 ÷ 1.26 = c D. 0.07 ÷ c = 1.26
Answers
Answer:
Option A: 0.07c = 1.26 is the correct answer
Step-by-step explanation:
Given that the price of shirt is denoted by c.
Given that the sales tax is 0.07 times of the cost of shirt.
Mathematically it can be written as:
[tex]Sales\ tax=0.07c[/tex]
Now it is also given in the statement that the sales tax is $1.26
Putting this value in the above equation
[tex]1.26 = 0.07c[/tex]
As we have to find the cost, dividing both sides by 0.07
[tex]\frac{1.26}{0.07} = \frac{0.07x}{0.07}\\c = \frac{1.26}{0.07}[/tex]
Hence, we saw that the intermediate equation was: 1.26 = 0.07c
So,
Option A: 0.07c = 1.26 is the correct answer
Answer: A. 0.07 · c = 1.26
Step-by-step explanation:
Sales tax (0.07) x cost (c) = price (1.26)
find the surface area of a cubical wooden box of edge 14cm
Answers
Answer:
1176
Step-by-step explanation:
WILL GIVE BRAINLIST FOR CORRECT ANSWER Which is the warmest temperature? Explain how you determined this using the number line.
A -3.5 F
B 5 F
C 1.5 F
D -0.5
E -2 F
the rest of the choices 2.5 and -4
Answers
Answer:
B 5 F it is the warmest
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
its the closest to the right
Dave has $13 to spend on a $6 book and two birthday cards (c) for his friends. How much can he spend on each card if he buys the same card for each friend.
whats the inequality? and how much can he spend on each card?
Answers
Answer:
3.50
Step-by-step explanation:
(13 - 6) divided by 2
7 divided by 2
$3.50
Answer:
3.50
Step-by-step explanation:
13 - 6 =7
If you have 7 dollars left and need 2 cards, u can plit the 7 dollars
7 ÷ 2 = 3.50
Lauren drew a tower using only similar quadrilaterals.
Which statement about the quadrilaterals must be true?
O The quadrilaterals have corresponding angles that are congruent.
0 The quadrilaterals are all the same size and shape.
O The quadrilaterals are different shapes but the same size.
O The quadrilaterals have corresponding sides that are congruent.
Answers
Answer:
B. The quadrilaterals are all the same size and shape.
Step-by-step explanation:
Lauren was drawing a tower ONLY using SIMILAR quadrilaterals, so since that is, since the quadrilaterals are similar, then they must have the same size and shape.
The statement i.e. true for quadrilaterals should be
B. The quadrilaterals are all the same size and shape.
What are quadrilaterals?A quadrilateral refer to the closed shape also it is the type of polygon that comprises of four sides, four vertices, and the four angles. Here the sum of the interior angle should be equivalent to the 360 degrees.
Therefore, we can conclude that the second option is correct.
hence, the rest of the options are wrong.
Learn more about angle here: https://brainly.com/question/11816894
The hire purchase cost of a radio is $6355. If the deposit is $1000 and the balance is to be paid in 9 equal instalments, each instalment will be
Answers
Answer: $595
is the correct answer
Please help me! Im not good at this topic.
Answers
Answer:
I THINK IT IS C.
Step-by-step explanation:
what you find 420% of 85 what are you looking for?
Answers
Answer:
420% of 85 = 357
Step-by-step explanation:
85/x=100/420
(85/x)*x=(100/420)*x - we multiply both sides of the equation by x
85=0.23809523809524*x - we divide both sides of the equation by (0.23809523809524) to get x
85/0.23809523809524=x
357=x
x=357
in a bucket,Brandon mixed 1/8 of a gallon of white paint with 2/3 of a gallon of green paint.How much paint did he have in the bucket
Answers
Answer:
19/24 is the answer
Find the remainder when f(x) = 4x3 − 20x − 50 is divided by x − 3.
Answers
Answer:
Step-by-step explanation:
x= -0.23 or -7/30