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Lady_Fox [76]
3 years ago
5

Please help me with this 8th grade math

Mathematics
1 answer:
VMariaS [17]3 years ago
7 0
The answer is -21 I just took the test
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If a =6, what is the value of 2a(3b + 5c)?
leva [86]

Answer:

<h2>36b + 60c</h2>

Step-by-step explanation:

Put a = 6 to the expression 2a(3b + 5c):

(2)(6)(3b + 5c) = 12(3b + 5c)               <em>use the distributive property</em>

= (12)(3b) + (12)(5c) = 36b + 60c

7 0
3 years ago
How do you solve d+12=2 using mental math
n200080 [17]
By minusing 12 to both sides
d+12=2
   -12=-12
d      =-10
5 0
3 years ago
Write the standard form of the quadratic function whose graph is a parabola with the given vertex and that passes through the gi
maks197457 [2]

Answer:

The formula for this quadratic function is x*2 +6x+13

Step-by-step explanation:

If we have the vertex and one point of a parabola it is possible to find the quadratic function by the use of this

y= a (x-h)*2 + K

Quadratic function looks like this

y= ax*2 + bx + c

So let's find the a

y= a (x-h)*2 + K where

y is 13, x is 0, h is -3 and K is 4

13= a (0-(-3))*2 +4

13=9a +4

9=9a

9/9=a

1=a

The quadratic function will be

y= 1(x+3)*2 + 4

Let's get the classic form

(x+3)*2 = (x+3)(x+3)

(x*2+3x+3x+9)

x*2 +6x+13

f(0) = 13

6 0
3 years ago
Read 2 more answers
For each one tell me if the graph is a function
klemol [59]

Answer:

Graph 1: not a function

Graph 2: is a function

Graph 3: is a function

Step-by-step explanation:

Use the vertical line test. Draw a straight line anywhere on your graph. if it passes over 2 points or more on your graph then it's not a function

6 0
3 years ago
Without using a calculator, simplify <br> Root of 20.
Leno4ka [110]

Answer:

4.472135955 , is the answer. simplified to two decimal places it will be 4.47

5 0
3 years ago
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