All categories

4 years ago

Which expressions are equivalent to 4(42)? Select each correct answer. A: 4(40 + 2) B: 4(4 + 2) C: 4(4 + 20) D: 4(20 + 22)

Mathematics

2 answers:

olga2289 [7]4 years ago

8 0

Answer A and D are equivalent to 4(42).

Amiraneli [1.4K]4 years ago

4 0

You do the math in the parenthesis first so for A 40 +2 = 42 becoming 4(42) and D 20 + 22 = 42 becoming 4(42)

You might be interested in

A 97% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina

ivann1987 [24]

Answer:

The sample size will be " $102.5494 \sim 102$ ". A further explanation is given below.

Step-by-step explanation:

Let the sample size will be:

= n

The given values are:

Standard deviation,

= 1.4

ME,

= 0.3

As we know,

⇒ $n=(Z \frac{a}{2}\times \frac{SD}{E})^2$

On putting the estimated values, we get

⇒ $=(2.17\times \frac{1.4}{0 .3})^2$

⇒ $=(\frac{3.038}{0.3})^2$

⇒ $=102.5494 \sim 102$

4 0

3 years ago

Assume a student shows up for EGR 280 completely unprepared and the instructor gives a pop quiz. Assume there are 6 questions, e

Kisachek [45]

Answer:

P=20%

Step-by-step explanation:

Let's suppose that each question in the test has one and only one correct answer. This means we have 1 desired outcome out of the total 5 desired outcomes. Therefore:

Probability=#of desired outcomes / #of possible outcomes

$P=\frac{1 correct}{5 opctions}$

$P=\frac{1}{5}$

P=0.20

P=20%

7 0

3 years ago

This question on math and needs to be written a proportion

guapka [62]

Answer:

g = 3

Step-by-step explanation:

miles / gallon = miles / gallon

104 / 4 = 78 / g

cross-multiply to solve for 'g':

78(4) = 104g

312 = 104g

312/104 = g

3 = g

4 0

2 years ago

Read 2 more answers

Pls Answer! Will give brainliest. Khanna earns a annual salary of $33,000. Her federal income tax bracket is 20%. She also must

maks197457 [2]

Answer: $3,581

Step-by-step explanation:

As she plans to save from her net income, we have to find the net income first:

= Net income - Federal taxes - Social and Medicare taxes

= 33,000 - (33,000 * 20%) - (33,000 * 7.65%)

= $23,875.50

The savings will be:

= Net income * Savings percentage

= 23,875.50 * 15%

= $3,581.325

= $3,581

8 0

3 years ago

Write the following expression as the product of a repeated variable. X^5

klemol [59]

Answer:

Step-by-step explanation:

6 0

3 years ago