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Degger [83]
3 years ago
11

PLEASE HELP. ITS TIMED. Which pair shows equivalent expressions?

Mathematics
1 answer:
Oksanka [162]3 years ago
5 0
It’s the last option :)))
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In an interview of 45 students, 12 liked Mathematics and Science, 5 liked Mathematics and English, 25 liked Mathematics; 23 like
Mkey [24]

Answer:

Step-by-step explanation:

plus 18 and subtract 4

6 0
2 years ago
70 sixth-graders had an average weight of 90 pounds. 30 seventh graders had an average weight of 100 pounds. What was the averag
Brrunno [24]

We know that 70 sixth graders had an average weight of 90 pounds, and 30 seventh graders had an average weight of 100 pounds.

We know that the weight of all 70 sixth graders will be 70*90, since we're multiplying the total amount of students by the average.

Using this same logic tells us that the total weight for the 30 seventh graders is 30*100

The average weight for all 100 students will be the total weight of the sixth graders (which is 70*90) added with the total weight of the seventh graders (which is 30*100), then finally divided by the total amount of students in the sample space (which is 100).

\dfrac{70(90)+30(100)}{100}

=\dfrac{6300+3000}{100}

=\dfrac{9300}{100}

=93

The average of all 100 students is 93 pounds.

Let me know if you need any clarifications, thanks!

6 0
4 years ago
How do I factorise <br> 28x-4
IgorLugansk [536]
Step 1. Check if both terms of your expression have a common factor.
Notice that both 28x and 4 are divisible by 4, so the common factor of your expression is 4.

Step 2. Take out the common factor by dividing each one of the terms by the common factor and grouping the results inside a parenthesis:
\frac{28x}{4}=7x and \frac{4}{4} =1
28x-4=4(7x-1)

We can conclude that the factored form of 28x-4 is 4(7x-1).

7 0
3 years ago
Test question........................
ikadub [295]

You Have Passed Thy Test!!! BADAAAA (\•o•/)

6 0
3 years ago
Read 2 more answers
Please I need help? And can u help me with the other questions I asked on my profile?
emmasim [6.3K]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

To calculate m use the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (2,2) and (x₂, y₂ ) = (8, 5) ← 2 points on the line

m = \frac{5-2}{8-2} = \frac{3}{6} = \frac{1}{2}

the line crosses the y-axis at (0, 1) ⇒ c = 1

y = \frac{1}{2} x + 1 ← equation in slope- intercept form



8 0
3 years ago
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