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damaskus [11]
3 years ago
12

Plz help on all of this these

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
3 0
7.) 170
8.) 9
9.) 44
10.) -124
11.) -99
12.) 84
13.) 88
14.) -1080
15.) -27
16.) -81
17.) -27
18.) -81
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(8x 2 −15x)−(x 2 −27x)=ax 2 +bxleft parenthesis, 8, x, squared, minus, 15, x, right parenthesis, minus, left parenthesis, x, squ
quester [9]

Answer:

<h2>5</h2>

Step-by-step explanation:

Given the expression (8x² −15x)−(x² −27x) = ax² +bx, we are to determine the value of b-a. Before we determine the vwlue of b-a, we need to first calculate for the value of a and b from the given expression.

On expanding the left hand side of the expression we have;

= (8x² −15x)−(x² −27x)

Open the paranthesis

= 8x² −15x−x²+27x

collect the like terms

= 8x²−x²+27x −15x

=  7x²+12x

Comparing the resulting expression with ax²+bx

7x²+12x =  ax²+bx

7x² = ax²

a = 7

Also;

12x = bx

b =12

The value of b - a = 12 - 7

b -a = 5

Hence the value of b-a is equivalent to 5

3 0
3 years ago
Help plz...................................
N76 [4]

Answer:

12

Step-by-step explanation:

These are similar triangles, so the ratio of their sides is the same for each side.

AB = 8  and  BD = 10

So, the ratio is 8:10   or   4:5

Because the triangles are similar....

The ratio of AC:CE  is also  4:5

12:15 = 4:5

So, 12 is the answer!

8 0
3 years ago
Which of the following lists the angles from smallest to largest?
ioda

Here is your answer

The angle opposite of the larger side is greater and vice versa.

Here

smallest side= AC (8cm)< BC (9cm) <AB (10cm)

So,

angles opposite to these sides are

B <A <C

HOPE IT IS USEFUL

5 0
3 years ago
PLEASE HELP MEEE 28 POINTS
Blizzard [7]

Answer:

1) (\frac{1}{6}) (^{30n}) +(\frac{1}{6})(^{24}) -(\frac{1}{2})(^{63}) -(\frac{1}{7}) (-7n)

2)5x+4-9+x

3)5x+x+4-9

4)6x-5

Step-by-step explanation:

hope it helps

have a nice day :)

6 0
3 years ago
Read 2 more answers
I have 20 books. Some are English and some are French. If 15 books are French, what fraction of books are in English?
allsm [11]
15/20 are French so 5/20 are English
Simplified that’s 1/4
Only applies if all the books are either English or French
I think
6 0
2 years ago
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