3 years ago

The sum of twice a number and seven

Mathematics

1 answer:

sergejj [24]3 years ago

7 0

Answer:

2x+7

Step-by-step explanation:

The word sum indicates addition.

Twice a number is 2x

and 7 is plus 7

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What is 1/5 plus 3/7 in fractions

Varvara68 [4.7K]

Answer:

22/35

Step-by-step explanation:

first get a common denominator in order to add. The common denominator is 35.

the new fractions should be 7/35 + 15/35

add the top and you get 22/35

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3 years ago

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Use and list a line of your choice that's neither horizontal nor vertical to reflect the object and show where it ends up.

EastWind [94]

Ughhh I’m not totally sure I’m sorry I tried looking it up for you

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2 years ago

Only two full boxes and a box that was 75% full. Create a written expression

Alona [7]

Answer:

2( 100%) +75%

Step-by-step explanation:

a full box will literally be 100%, so two full boxes will be 2 × a full ie 100%, 'and' a box ie 75% full is addition '+'

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2 years ago

A set of data was published in the fall 2019 Phi Kappa Phi Forum regarding the performance of Major League Baseball (MLB) umpire

const2013 [10]

Answer:

The answer is "1.30".

Step-by-step explanation:

Proportion of population $=0.20$

Ratio sample $=\frac{70}{300}=\frac{7}{30}=0.23$

Statistics of the test:

$\to Z=\frac{(0.23-0.2)}{\sqrt{(\frac{0.2\times(1-0.2)}{300})}}\\\\$

$=1.30$

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2 years ago

Solve this question. a/7-3<0

valkas [14]

Answer:

$\boxed{\sf{a$

Step-by-step explanation:

You only need to isolate the term a to solve this problem.

Add by 3 from both sides.

$\sf{\dfrac{a}{7}-3+3$

Solve.

0+3=3

a/7<3

Multiply by 7 from both sides.

$\sf{\dfrac{7a}{7}$

Solve.

3*7=21

As a result, the solution is a<21, which is our answer.

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2 years ago