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3 years ago

6

A girl has $2.87 in pennies, nickels, dimes, and quarters. If she has an equal number of coins of each kind, how many coins does

she have? Answer is a whole number.

1 answer:

nata0808 [166]3 years ago

8 0

The answer is twenty-eight coins in all, or seven of each coin.

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20. Solve the equation x2 - 17x + 72 = 0.

Rina8888 [55]

Answer:

x=8,9

Step-by-step explanation:

x^2-17x+72=0

(x-8)(x-9)=0

x=8,9

3 0

3 years ago

Susannah has a high-yield savings account into which she deposits $140 each month. At the beginning of the year, Susannah's acco

motikmotik

Answer:

Her account balance will be $2,080 at the end of the year

Step-by-step explanation:

Let

y ----> Susannah's account balance

x ---> is the amount of time in months

we have

$y=140x+400$

This is a linear equation in slope intercept form

where

The slope or unit rate is equal to

$m=\$140\ per\ month$

The y-intercept or initial value is equal to

$b=\$400$

Remember that

One year is equal to 12 months

so

For x=12 months

substitute in the linear equation

$y=140(12)+400=\$2,080$

5 0

3 years ago

Can someone help please?!! Major Help Pic above

Mila [183]

I believe it’s c. I hope that this is helpful!

8 0

3 years ago

The sum of two numbers is the same as four times the smaller number. If twice the larger is decreased by the smaller, the result

liraira [26]

The two numbers are 6 and 18

Step-by-step explanation:

The given is:

The sum of two numbers is the same as four times the smaller number
If twice the larger is decreased by the smaller, the result is 30

We need to find the the numbers

Assume that the smaller number is x and the larger number is y

∵ The smaller number = x

∵ The larger number = y

∵ The sum of the two numbers is the same as four times the

smaller number

- That means add the two numbers and equate the sum by four

times x

∴ x + y = 4x

- Subtract both sides by x

∴ y = 3x ⇒ (1)

∵ Twice the larger number is decreased by the smaller number,

the result is 30

- That means multiply y by 2 and subtract x from the product,

then equate the difference by 30

∴ 2y - x = 30 ⇒ (2)

- Substitute y in equation (2) by equation (1)

∵ 2(3x) - x = 30

∴ 6x - x = 30

- Add like terms in the left hand side

∴ 5x = 30

- Divide both sides by 5

∴ x = 6

- Substitute the value of x in equation (1) to find y

∵ y = 3(6)

∴ y = 18

The two numbers are 6 and 18

Learn more:

You can learn more about the system of equation in brainly.com/question/2115716

#LearnwithBrainly

5 0

3 years ago

Please help thank you

zlopas [31]

Answer:

A is the real part and B is the imaginary part. i is an imaginary figure. b is how many imaginary figures there are, making it represent an imaginary part

3 0

3 years ago