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3 years ago

What is the value of y in the equation 6.4x +2.8=44.4 , when x=3 ? y=

Mathematics

1 answer:

masha68 [24]3 years ago

8 0

Answer:

y=3.15

Step-by-step explanation:

I am assuming you meant 2.8y in your equation.

Plug in for x

6.4(3)+2.8y=44.4

6.4*3=19.2

So now 19.2 + 2.8y = 44.4

44.4-19.2=25.2

25.2/2.8=3.15

Meaning Y=3.15

Read more about similar shapes at:

brainly.com/question/24214480

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5 0

2 years ago

Riley bought 30 festival tickets for his friends and paid $145.How much did each ticket cost?

Sladkaya [172]

Answer: $4.83

Step-by-step explanation:

you do 145/30=4.8333

Can i please have brainliest, if not thats alright

Have a good day

7 0

3 years ago

Read 2 more answers

14.89 divided by 0.02

Aneli [31]

Answer:

744.5

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

If you can’t see the answer choices , they are A. 9 B. 8 C. 10 D. 12

ANTONII [103]

Answer:a)9

I think

Step-by-step explanation:

6 0

3 years ago

Triangle P R Q is shown. Angle R P Q is 39 degrees. The length of P R is 6, the length of R Q is p, and the length of P Q is 8.

KATRIN_1 [288]

According to law of cosines the length of RQ can be written as $p^{2} =6^{2} +8^{2} -2*6*8cos(39)$ .

Given the length PR is 6 , the length of RQ is p, the length of PQ is 8 and the angle RPQ is 39 degrees.

A length of the triangle can be written as according to law of cosines if sides are given and one angle is $a^{2} =b^{2} +c^{2} -2bccos(A)$

We have to just put the values in the above equation.

as $p^{2} =6^{2} +8^{2} -2*6*8cos(39)$ .

p is the side opposite to angle given , the length of other sides are 6 and 8 and angle is 39 degrees.

Hence the side can be written as according to law of cosines if the angle is 39 degrees is as $p^{2} =6^{2} +8^{2} -2*6*8cos(39)$ .

Learn more about trigonometric functions at brainly.com/question/24349828

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7 0

2 years ago