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lidiya [134]
3 years ago
11

Answer this and you’ll get brainlest

Mathematics
1 answer:
Misha Larkins [42]3 years ago
7 0

Answer:

D 18

Step-by-step explanation:

Let r = red pens

b =5r

g = 3r

The total number of pens

r+b+g

Substitute

r + 5r+ 3r

Combine like terms

9r

The number of pens must be a multiple of 9

18 is a multiple of 9

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1/7(x+21)=-6<br> answer ?
Talja [164]
(1/7) Multiplied By x is 1/7x And (1/7) Multplied By Positive 21 is 3. So It Will Then Change To 1/7x + 3 = -6.
Subtract 3 From Both Sides. Then The Equation Changes To 1/7x = -9
Then Since (1/7) Basically Means To Divide You Would Multiply By 7 On Both Sides And Then x Would Equal -63!(:
Then Can Plug In -63 Where x Is To Check Your Work! Hope I Helped!
5 0
3 years ago
Read 2 more answers
I need to know if this Answer is correct. please tell me the answer. if it's wrong. Thanks!!!
yaroslaw [1]
Here, as I can see, you are adding fractions, and making sure you have a common denominator. 

12) is correct
13) is correct

You got a common denominator, and added them up! Great job! <span />
6 0
3 years ago
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Help plz..And No links!! I repeat No links!!
ser-zykov [4K]

Answer:

4m

Step-by-step explanation:

shapes are similar.

purple shape is double the red and 2x2 is four

so the answer is 4m

7 0
3 years ago
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What is y = x 2 + 10 x + 28 in vertex form?
Alexeev081 [22]

Answer:

=12x+28

Step-by-step explanation:

5 0
3 years ago
Identify an equation in point-slope form for the line parallel to y = 1*-7 that
kakasveta [241]

<u><em>Answer:</em></u>

y + 2 = 1 (x+3) ............> y + 2 = x + 3

<u><em>Explanation:</em></u>

<u>The general form of the equation of a line in point-slope form is:</u>

y - y₁ = m (x - x₁)

<u>where:</u>

m is the slope of the line

(x₁ , y₁) is a point that belongs to the line

<u>The general form of the equation of a line in slope-intercept form is:</u>

y = mx + c

<u>where:</u>

m is the slope

c is the y-intercept

<u>1- Getting the point:</u>

We are already given the point (-3 , -2) so we'll directly use it

<u>2- Getting the slope</u>

<u>We are given that our line is parallel to the line:</u>

y = 1x - 7

We know that parallel lines have equal slopes

<u>This means that:</u>

slope of the line we want = 1

<u>3- Getting the equation:</u>

Substitute with the point and slope in the above form to get the equation

<u>This is done as follows:</u>

y - y₁ = m (x - x₁)

y - (-2) = 1 (x - (-3))

y + 2 = 1 (x + 3)

y + 2 = x + 3

Hope this helps :)

4 0
3 years ago
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