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3 years ago

Please answer this correctly

Mathematics

2 answers:

Elden [556K]3 years ago

7 0

Answer:

2 minutes and 50 seconds

I think thats the answer, sorry if it's wrong ;;

zysi [14]3 years ago

3 0

Answer:

it's 2.31 mins

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Lindsey invests $1500 in one account and $900 in an account paying 4 % higher interest. At the end of one year she had earned $2

Yanka [14]

Answer: She invest 41500 at 7% interest and 900 at 11% interest.

Step-by-step explanation:

Formula for simple interest = $\dfrac{\text{Principal x rate x Time}}{100}$

Let $P_1=\$1500,\ P_2=\$900\ \ \ \ , r_1=r, \ \ r_2=r+4,\ \ \ t_1=t_2=1$

Simple interest by first investment = $\dfrac{P_1r_1t_1}{100}=\dfrac{1500(r)(1)}{100}=15r$

Simple interest by second investment = $\dfrac{P_2r_2t_2}{100}=\dfrac{900(r+4)(1)}{100}=9(r+4)$

As per given,

Total interest = $204

$\Rightarrow 15r+9(r+4)=204\\\\\Rightarrow\ 15r+9r+36=204\\\\\Rightarrow\ 24r=204-36\\\\\Rightarrow\ 24r=168\\\\\Rightarrow\ r=\dfrac{168}{24}\\\\\Rightarrow\ r=7\%$

Hence, she invest 41500 at 7% interest and 900 at 11% interest.

3 0

3 years ago

3 tons of rocks cost $4,740.00. What is the price per pound?

wel

Answer:

$0.79 per pound

Step-by-step explanation:

<u>Step 1: Find the price per pound</u>

1 ton = 2000 pounds

3 * 2000 = 6000

So...

$\frac{4740}{6000}$

$0.79 per pound

Answer: $0.79 per pound

6 0

3 years ago

Read 2 more answers

Can you use the SSS Postulate to prove QPS≈QRS?

Assoli18 [71]

Answer:

by SAS only

Step-by-step explanation:

based on the diagram we only have one side and one angle explicitly identified as equivalent.

but we have an implicit confirmation of the second side QS to the enclosed angle, because the triangles are presented that this side is the same for both triangles.

so, SAS applies (but no other, as we don't have any information on the 3rd side).

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3 years ago

The range of fx=4x is

fiasKO [112]

The range is all positive real numbers

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3 years ago

Find x<br><br>8(x+1)³ = 27(2x-1)³

STatiana [176]

Answer:

As a fraction x = 5/4

As a decimal x = 1.25

Step-by-step explanation:

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3 years ago