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steposvetlana [31]

3 years ago

6

Sierra has $40 in her savings account. She deposits $55 a week and never withdrawals money. Zayn has $250 in his savings account

. He is able to deposit $20 per week. How many weeks will it take for them to have the same amount of money in each account?

1 answer:

fenix001 [56]3 years ago

7 0

Answer:

6 weeks

Step-by-step explanation:

Sierra: 40 + (55x)

40 + (55 * 6) = 370

Zayn: 250 + (20x)

250 + (20 * 6) = 370

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Evaluate i^31 please help

Nadya [2.5K]

ANSWER

${i}^{31} = - i$

EXPLANATION

We want to evaluate

${i}^{31}$

Use indices to rewrite the expression as:

$= {i}^{30} \times i$

We know that

${i}^{2} = - 1$

So we rewrite the expression to obtain;

$= ({ {i}^{2}) }^{15} \times i$

This gives us;

$= {( - 1) }^{15} \times i$

This simplifies to

$= - 1 \times i$

$= - i$

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3 years ago

How do you The the answer of equation of the boundary line & to write the inequality whose graph is shown? How do you work i

Firlakuza [10]

This is the equation
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3 0

3 years ago

Simplify and write the answer in exponential form. 3^4 x 3^5 a.) 3^9

givi [52]

Answer:

<h3>(a) 3^9</h3>

Step-by-step explanation:

<h3> IN EXPONNETIAL FORM :</h3>

<h3>– (a^m× a^n) = (a^m+n)</h3>

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<h3 />

5 0

3 years ago

Solve the simultaneous equations<br> x + 6y = 20<br> x + 3y = 14<br> x =<br> Y=

xxTIMURxx [149]

Answer:

x = 8, y = 2

Step-by-step explanation:

Multiply the second equation by -2:

x + 6y = 20

-2x - 6y = -28

Add the equations and simplify:

-x = -8

x = 8

Plug x = 8 back into the first equation and solve for y:

8 + 6y = 20

6y = 12

y = 2

6 0

3 years ago

Read 2 more answers

How many cubic centimeters of water can this paper cone cup hold?

Igoryamba

Answer:

150.72 cubic centimeter

Step-by-step explanation:

Given:-

Height of cone (h) = 9cm

Diameter of cone(d)=8cm

radius of cone(r)= $\frac{d}{2}$ = $\frac{8}{2} =4cm$

To calculate= Volume of cone( $V_{cone}$ )

$Volume\ of\ cone(V_{cone}) =\frac{1}{3} \times \pi \times r^{2} \times h$

$=\frac{1}{3} \times 3.14\times 4^{2} \times 9$

Volume of cone( $V_{cone}$ ) $=150.72\ cubic\ centimeter$

Therefore paper cone cup can hold 150.72 cubic centimeter of water.

5 0

4 years ago