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Agata [3.3K]
2 years ago
8

Mason used distributive property of multiplication to help him solve the equation 3 x 7 = ________. Mason did not get the same a

nswer for each side of the expression. Explain the steps required to correct his mistake.
3 x 7 = (3 x 3) + (3 x 6)
21 = 9 + 18
21 = 27
Mathematics
1 answer:
VikaD [51]2 years ago
6 0

Answer:

Step-by-step explanation:

We can rewrite 7 as 3+4 then instead of 3*7 we have 3*(3+4).

Then distribute the 3 in the parenthesis 3*(3+4) = (3*3) + (3*4)

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A quality control engineer is testing the battery life of a new smartphone. The company is advertising that the
DIA [1.3K]

The question requires stating the Null and Alternative hypothesis for the scenario described :

Answer:

H0 : μ = 24

H1 : μ < 24

Step-by-step explanation:

The claim or hypothesis to be tested in a statistical problem or analysis is the alternative hypothesis. This is usually the opposite of the Null hypothesis which is the usually the initial truth until there is significant evidence provided using statistical test to prove otherwise.

The null hypothesis, H0 in the scenario above is :

H0 : μ = 24 ( average battery life is 24 hours)

The alternative hypothesis is the claim, that is. The mean battery life not up to 24 hours ;

H1 : μ < 24

4 0
2 years ago
What is the answer. Shawn pays $1.75 for a school lunch on days when he doesn't bring his own lunch to school. One week he bough
katen-ka-za [31]

Answer:

C. 3.50

Step-by-step explanation:

He bought a lunch two times, so $1.75*2 = 3.50.

5 0
3 years ago
Which statement best describes the effect of replacing the function f(x) = 2x + 2 with the function g(x) = 2x - 3?
FrozenT [24]
The correct answer is: <span>The graph shifts 5 units right

Explanation:
Below is the graph attached of both the equations:

Red line: 
Represents f(x) = </span><span>2x + 2.
Blue line: Represents g(x) = 2x - 3.

As you can see in the graph that g(x) is shifted 5 units right to f(x).

If you move towards right by 1 unit, you have to subtract 1 from f(x) until you reach g(x) like:
2x + 2 - 1 = 2x + 1 (1 unit)
</span>2x + 1 - 1 = 2x (1 unit)
2x - 1 = 2x - 1 (1 unit)
2x - 1 -1 = 2x - 2 (1 unit)
2x -2 - 1 = 2x -3 (1 unit)

Total 5 units.

Hence the correct answer is t<span>he graph shifts 5 units right.</span>

7 0
3 years ago
Read 2 more answers
There are 480 jellybeans in an 8-ounce jar. How many jellybeans are there per ounce in the jar?
Alja [10]
The answer would be 60. This is because 480/8=60. 
7 0
3 years ago
Read 2 more answers
6. Find the area of the triangle below.<br> Be sure to include the correct unit in your answer.
snow_tiger [21]

Answer:

512

Step-by-step explanation: area of triangle= 1/2*base*height

4 0
3 years ago
Read 2 more answers
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