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3 years ago

Howto solve for x in X+10=30

Mathematics

2 answers:

Alla [95]3 years ago

3 0

Answer:

Step-by-step explanation:

x+10=30

x=30-10

x=20

<h2>HOPE IT HELPED </h2>

Len [333]3 years ago

3 0

Step-by-step explanation:

<h2>=>x+10=30</h2><h2>=>x+10-10=30-10 ten(+10) will be cancelled by negative ten(-10)</h2><h2>=>x=20</h2>

check

20+10=30

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Jorge randomly selects a digit from 0 to 9. What is the probability that the digit he selects is a prime number?

zloy xaker [14]

Step-by-step explanation:

{0,1,2,3,4,5,6,7,8,9}--set of numbers from 0 to 9

{2,3,5,7}---set of prime numbers from 0 tp 9

there are 10 numbers in the first set and 4 numbers in the second set.

4/9 is the probability that the digit he selects is a prime number

Hope that helps :)

3 0

3 years ago

There are 7 ushers and 11 technicians helping at the Harper Middle School fall play.

bearhunter [10]

Answer:

<h3>The ratio of technicians to all helpers is 11 : 7, or $\frac{11}{7}$ or 11 to 7.</h3>

Step-by-step explanation:

Given that there are 7 ushers and 11 technicians helping at the Harper Middle School fall play.
Let x be the number of ushers ( or helpers ).
Therefore x=7 helpers.
Let y be the number of technicians.
Therefore y=11 technicians.

<h3>To find the ratio of technicians to all helpers :</h3>

That is to find the ratio of y to x.

We can write the ratio of technicians to all ushers(helpers) as y : x

Which implies that 11 : 7, (since y=11 and x=7)

Or $\frac{11}{7}$ or 11 to 7

<h3>The ratio of technicians to all helpers is 11 : 7, or $\frac{11}{7}$ or 11 to 7</h3>

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3 years ago

What is the slope of the line that passes through the points M(-3,5) and N (1,8)

Arlecino [84]

Answer:

m= $\frac{3}{4}$

Step-by-step explanation:

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2 years ago

How wide is the house?

klemol [59]

Answer:

35.35ft

Step-by-step explanation:

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3 years ago

Express the first quantity as a percentage of the second. 1 h 3 min, 3 h 30min.

KatRina [158]

Answer:

30%

Step-by-step explanation:

first we require both quantities to have the same units

converting both to minutes

1 h 3 min = 60 + 3 = 63 min

3h 30 min = (3 × 60) + 30 = 180 + 30 = 210 min

then express as a fraction and multiply by 100% to express as a percentage

$\frac{63}{210}$ × 100%

= 0.3 × 100%

= 30%

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1 year ago