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3 years ago

If you’re good with set theory for math 30 please help with question 5!

Mathematics

1 answer:

grandymaker [24]3 years ago

8 0

Answer:

Step-by-step explanation:

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5-2(4a+1)+3a=13 A= 2/3 A= -2 A= -6/5 A=2

VMariaS [17]

Answer:

a = -2

Simplifying 5 + -2(4a + 1) + 3a = 13 Reorder the terms: 5 + -2(1 + 4a) + 3a = 13 5 + (1 * -2 + 4a * -2) + 3a = 13 5 + (-2 + -8a) + 3a = 13 Combine like terms: 5 + -2 = 3 3 + -8a + 3a = 13 Combine like terms: -8a + 3a = -5a 3 + -5a = 13 Solving 3 + -5a = 13 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -5a = 13 + -3 Combine like terms: 3 + -3 = 0 0 + -5a = 13 + -3 -5a = 13 + -3 Combine like terms: 13 + -3 = 10 -5a = 10 Divide each side by '-5'. a = -2

6 0

3 years ago

A helicopter flying at an altitude of 600 ft dropped a package to a lifeboat. Use the formula t= - to find how many

Andre45 [30]

Answer:

6.1 seconds

Step-by-step explanation:

The correct question is

A helicopter flying at an altitude of 600 ft dropped a package to a lifeboat. Use the formula t= √h/4 to find how many seconds it takes for the package to reach the lifeboat. Round your answer to the nearest tenth of a second

we have

$t= \frac{\sqrt{h}}{4}$

substitute the value of h in the formula

$h=600\ ft$

$t= \frac{\sqrt{600}}{4}=6.1\ sec$

8 0

3 years ago

Help please i’ll mark brainliest

ivolga24 [154]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Subtract using the number line. <img src="https://tex.z-dn.net/?f=%20-%201%20%5Cfrac%7B1%7D%7B3%7D%20%20-%20%20%5Cfrac%7B1%7

Allisa [31]

Answer:

- 1 2/6 - 1/6

- 1 3/6

-1 1/2

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Maureen earned some money doing odd jobs last summer and put it in a savings account that earns 9% interest compounded quarterly

ivolga24 [154]

Answer:

Maureen earned $123.19 doing odd jobs

Step-by-step explanation:

The compound interest formula is given by:

$A(t) = P(1 + \frac{r}{n})^{nt}$

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit year and t is the time in years for which the money is invested or borrowed.

In this question:

Compounded quarterly means that $n = 4$