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2 years ago

4(10b-4) Explain please

Mathematics

2 answers:

katovenus [111]2 years ago

5 0

Answer:

40b - 16

Step-by-step explanation:

4 (10b - 4)

= (4*10b) - (4*4) [distributive property]

= 40b - 16

Hope it helps ⚜

Angelina_Jolie [31]2 years ago

4 0

<h3>Answer: 40b - 16</h3>

Work Shown:

4(10b-4)

4*10b - 4*4

40b - 16

I multiplied the outer term 4 by each term inside. Refer to the distribution property (aka distributive property).

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Jaclyn bought a PS4 game that was on sale for 20% less than the original price. The original price was $10 more than the sale pr

vaieri [72.5K]

Answer:

$50

Step-by-step explanation:

If the original price was $10 more than the sale price, so we know that in this case, 20% = $10. Because 20% is equivlalent to $\frac{1}{5}$ , multiply $10 by 5 to get the answer of $50.

7 0

3 years ago

Help me again, Last question!

storchak [24]

Answer:

Step-by-step explanation:

Area of a parallelogram = base times height.

The base is 14 and the height is 3, you just have to rotate the figure.

A = 14 * 3 = 42 square feet

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2 years ago

Identify the amount, base, and percent in the problem: What is 60% of 485?

IrinaK [193]

Hey there! I'm happy to help!

The percent in the problem is 60% (as it has a percent time).

The base is the number we start with, so it is 485.

The amount is the percent of the base. As a decimal, 60% is 0.6. So, we just multiply this by 485.

0.6×485=291

Therefore, the amount is 291.

AMOUNT: 291

BASE: 485

PERCENT: 60%

Have a wonderful day! :D

3 0

3 years ago

According to a study conducted by the Gallup Organization, the the proportion of Americans who are afraid to fly is 0.10. A rand

notsponge [240]

Answer: 0.1457

Step-by-step explanation:

Let p be the population proportion.

Given: The proportion of Americans who are afraid to fly is 0.10.

i.e. p= 0.10

Sample size : n= 1100

Sample proportion of Americans who are afraid to fly = $\hat{p}=\dfrac{121}{1100}=0.11$

We assume that the population is normally distributed

Now, the probability that the sample proportion is more than 0.11:

$P(\hat{p}>0.11)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.11-0.10}{\sqrt{\dfrac{0.10(0.90)}{1100}}})\\\\=P(z>\dfrac{0.01}{0.0090453})\ \ \ [\because z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}} ]\\\\=P(z>1.1055)\\\\=1-P(z\leq1.055)\\\\=1-0.8543=0.1457\ \ \ [\text{using z-table}]$

Hence, the probability that the sample proportion is more than 0.11 = 0.1457

3 0

3 years ago

“Solve for x” x/2 + x/5 = 1

AlladinOne [14]

Answer:

x=1/7

Step-by-step explanation:

x/2+x/5=1

make same denominators;

5x/10+2x/10=1

simplify;

7x=1

x=1/7

4 0

3 years ago