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2 years ago

Which question cannot be answered by the solution to the equation 3x=27 ?

2 answers:

7 0

D

this is because there are 27 total students and 3 groups. let x represent the number of students per group. the equation would be 3(x)=27

if u need to solve for x, it would be x =9

Citrus2011 [14]2 years ago

7 0

Answer: hi

Step-by-step explanation:

im back:)

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A coin collector has $45 in just dimes and quarters in a piggy bank he counted all the coins and there are 240 total how many ea

Whitepunk [10]

Answer:

The number of <u>dimes are 100</u> and number of <u>quarters are 140.</u>

Step-by-step explanation:

Let the number of dimes be 'd' and quarters be 'q'.

Given:

The sum of amount is $45.

The total number of coins are 240.

1 dime = $0.10

∴ 'd' dimes = $\$0.10d$

1 quarter = $0.25

∴ 'q' quarters = $\$0.25q$

Now, as per question:

$d+m=240-----1\\0.1d+0.25q=45---2$

Multiplying equation (1) by -0.1 and adding the result to equation (2), we get:

$-0.1d-0.1q=240\times -0.1\\-0.1d-0.1q=-24\\0.1d+0.25q=45\\-----------\\0.15q=21\\q=\frac{21}{0.15}=140\\\\d=240-q=240-140=100$

Therefore, the number of dimes are 100 and number of quarters are 140.

7 0

3 years ago

What is the equation of the line passing through the points (4,8) and (-1,-12)

d1i1m1o1n [39]

Answer:

y=4x-8 hope this helps:)

6 0

3 years ago

Read 2 more answers

Melanie invested $3,800 in an account paying an interest rate of 2 % compounded

GaryK [48]

Answer:

.85

Step-by-step explanation:

Compound interest formula

$PV(1+\frac{i}{n})^{nt}$

Melanie:

$3800(1+\frac{.02}{4})^{(6*4)\\}\\=3800(1+.005)^{24}\\3800*1.1272=4283.21$

Sebastian:

$3800(1+\frac{.02}{12})^{12*6}\\3800(1.0017)^{72}\\3800*1.1274=4284.06$

4824.06-4283.21= .85

4 0

3 years ago

What is the number between 8 and 21

I am Lyosha [343]

Answer:

9,10,11,12,13,14,15,16,17,18,19 and 29

Step-by-step explanation:

Hope this help!!

3 0

2 years ago

Read 2 more answers

write an expression that has a value of 100 and follows these restrictions. (1) uses each of the four operations at most once. (

posledela

33 * 3 + 3/3 = 100

I do not believe u have to use all of the operations because it says " at most once ".

5 0

3 years ago

Read 2 more answers