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Nataly [62]
3 years ago
10

What is the length of QR

Mathematics
2 answers:
raketka [301]3 years ago
8 0

Answer:

8

Step-by-step explanation:

Set 3n-1=5n-7.

Solve.

n=3.

Plug in 3 to 5n-7.

QR=8

Rus_ich [418]3 years ago
8 0

Answer:

QR=8

Step-by-step explanation:

so using the fact that the two triangles are congruent, we can determine:

5n-7=3n-1

5n-6=3n

2n-6=0

n=3

so we replace all n in 5n-7 with three

5x3-7

15-7

8

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When two 6-sided dice are rolled, there are 36 possible outcomes. Find the probability that the sum is 8
katrin2010 [14]

Answer:

5/36

Step-by-step explanation:

Probability is the outcome that a  event will occur

Probability = Expected outcome/Total outcome

Since two sided dice are rolled, the total outcome will be expressed as;

Total outcome = 36

Since we are to find the probability that the sum is 8, the values that gives a sum of 8a re;

(2,6)(6,2), (5, 3), (3,5), (4, 4)

The expected outcome = 5

Probability = 5/36

Hence the probability that the sum is 8 is 5/36

4 0
3 years ago
Jada was using square stickers that were 3/4in long to decorate the spine of a photo album. The spine is 10 and 1/2in long. If s
nevsk [136]

Answer:

13

Step-by-step explanation:

Given:

  1. Square stickers that were 3/4 in long
  2. The spine is 10 and 1/2 in long

If she laid the stickers side by side without gaps or overlaps so the number of sticker to cover the length of the spine:

\frac{The length of the spine}{the length of the sticker}

10 : \frac{3}{4} ≈13  

She needs 13 stickers cover the length of the spine

7 0
3 years ago
Read 2 more answers
Um if you good at math please help me and i will give you brainliest
photoshop1234 [79]
Answer: A=20.8, B=20.5, C=10, D=2, E=12.6

Explanation: It takes time, but all you have to do it make an equation adding all the sides together, which equals 85.9. Then find “a” and plug that back in to each side. (I’m pretty sure this is right, but sorry if I’m wrong)
3 0
3 years ago
How would i go about simplifying (x+h)^3?
Sindrei [870]
H^3+3h^2x+3hx^2+x^3 should be the answer
7 0
3 years ago
Apply the distributive property to create an equivalent expression.
Bumek [7]

Given:

The expression is

(1-2g+4h)\cdot 5

To find:

The equivalent expression.

Solution:

Distributive property of multiplication over addition is

a(b+c)=ab+ac

Where, a, b and c are real numbers.

We have,

(1-2g+4h)\cdot 5

Using distributive property, we get

=(1)\cdot 5+(-2g)\cdot 5+(4h)\cdot 5

=5-10g+20h

Therefore, the expression 5-10g+20h is equivalent to the given expression.

8 0
3 years ago
Read 2 more answers
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