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3 years ago

Answer correctly for brainly (not 4

Mathematics

2 answers:

vaieri [72.5K]3 years ago

8 0

Hello there again. I have your answer: Solve for x by simplifying both sides of the equation, then isolating the variable. x = −8

Stella [2.4K]3 years ago

6 0

3. 2n/3

5. 100+10x =30x
Subtract 10x from both sides.

100 = 20x
Divide both sides by 20

5=x. 5 months

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(Mhanifa) please solve this question thank you!

ivanzaharov [21]

Answer:

Option A

Step-by-step explanation:

A'B' is 1/2 times the AB as the scale factor is 1/2.

<u>Find the length of AB using distance formula.</u>

AB = $\sqrt{(4 - 2)^2 + (4-0)^2} = \sqrt{20} = 2\sqrt{5}$

A'B' = 1/2*2 $\sqrt{5} = \sqrt{5}$

Correct choice is A

8 0

3 years ago

postnew [5]

12-3=9 they switch up and it still equals the same thing

5 0

3 years ago

Read 2 more answers

Show that y=cos(t)y=cos(t) is a solution to (dydt)2=1−y2(dydt)2=1−y2. Enter your answers below in terms of the independent varia

GrogVix [38]

Answer:

$(\frac{dy}{dt})^2=sin^2t$

Step-by-step explanation:

$y=cost$

DE : $(\frac{dy}{dt})^2=1-y^2$

If y is a solution of given DE then it satisfied the DE.

Differentiate w.r.t t

$\frac{dy}{dt}=-sint$

Using the formula

$\frac{d(cosx)}{dx}=-sinx$

LHS: $(\frac{dy}{dt})^2=(-sint)^2=sin^2t$

RHS

$1-y^2=1-cos^2t=sin^2t$

By using the formula

$sin^2t=1-cos^2t$

LHS=RHs

Hence, y is a solution of given DE

$(\frac{dy}{dt})^2=sin^2t$

7 0

3 years ago

What is the value of 7 in 6,735?

JulijaS [17]

First, you have to break the number down by expanding it to find the different number values.

6,735
↓
6,000 + 700 + 30 + 5

This shows us the values of the 7 in 6,735 is 700.

Answer: 700

6 0

3 years ago

At a grocery store, an uncooked beef roast is on sale for $4.99/lb. At the same store, prepared roast beef is at the deli for $2

Mrrafil [7]

For us to find out how many times more expensive is the deli roast compared to the uncooked roast we need to change the units;
cost of 100g=0.221lb is $2.99
cost of 1 lb will therefore be:
1/0.221*2.99
=$13.53/lb
therefore the number of times more expensive the deli roast is compared to uncooked roast is:
[price of 1lb roasted meat]/[price of 1 lb uncooked meat]
=13.53/4.99
=2.7 times

6 0

3 years ago