3 years ago

What is the answer to 7 y = 84

Mathematics

1 answer:

Furkat [3]3 years ago

4 0

7y = 84
y = 84 /7
= 12

So, y =12

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30^2 + 15^2 = c^2<br> Use pythagorean theorem

katovenus [111]

Answer:

c = 33.5

Step-by-step explanation:

$30^{2} + 15^{2} = c^{2}$

$900 + 225 = c^{2}$

$1125 = c^{2}$

(find square root of both sides to get c alone)

$c = 33.541$

6 0

3 years ago

Question 1

viktelen [127]

Given:

The demand function is,

$Q=-3p^2+2p+1970$

The total revenue function is,

$\begin{gathered} TR=p\times Q \\ TR=p\times(-3p^2+2p+1970) \\ TR=-3p^3+2p^2+1970p \end{gathered}$

Answer:

$TR=-3p^3+2p^2+1970p$

3 0

1 year ago

A stone is an English measure of weight. There are 14 lb in 1 stone and 2.2 lb in 1 kg.

AveGali [126]

We should use lb to convert weight to kg

let unknown lb be = X
14 lb = 1 stone
X lb = 9 stone
Cross multiply : X × 1 = 9 × 14
X = 126 / 1 = 126 lb

9 stone = 126 lb
let unknown value of kg be = Y
2.2 lb = 1kg
126 lb = Y kg
Cross multiply : 2.2 × Y = 126 × 1
Y = 126 / 2.2 = 57.3 kg

So 9 stone = 126 lb = 57.3 kg

HOPE IT HELPED !!

3 0

3 years ago

Read 2 more answers

A teacher noticed 5/8 of the students were wearing either blue shorts or white shorts. Write two different ways this could be do

lukranit [14]

3/8 could be wearing blue shorts and 2/8 could be wearing white shorts
4/8 could be wearing white shorts and 1/8 could be wearing blue shorts

3 0

4 years ago

HEEEEEEEEEEEEELP (Answer correctly and you get brainly :D)

Setler79 [48]

It’s the second one :)

3 0

3 years ago