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Snowcat [4.5K]
3 years ago
11

Please help 25 points and brainliest!

Mathematics
2 answers:
Doss [256]3 years ago
6 0

Answer:

a = -29

Step-by-step explanation:

12=\frac{a+5}{-2} \\\\-24=a+5\\a=-24-5\\a=-29

1st step is to multiply -2 on both sides

shusha [124]3 years ago
6 0

Step-by-step explanation:

12× -2 = a+5

-24 = a +5

a = 24+ 5

= 29

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Find the intersection points of the linear and quadratic functions shown below f(x)=2x-5 g(x)= x2+2x-21
Mice21 [21]

Answer:

(-4,-13) and (4,3) the intersection points.

Step-by-step explanation:

Intersection point of two functions is a common point which satisfies both the functions.

Given functions are,

f(x)=2x-5

g(x)=x^2+2x-21

For a common point of these functions,

f(x)=g(x)

2x-5=x^2+2x-21

-5=x^2-21

0=x^2-16

x^2=16

x=-4,4

For x=-4,

f(-4)=g(-4)=2(-4)-5

                       =-13

For x=4,

f(4)=g(4)=2(4)-5

                  =3

Therefore, (-4,-13) and (4,3) the intersection points.

3 0
3 years ago
Base Angle of an isosceles trapeziod are A.supplementary B.complementary C.congruent D.adjacent?
Art [367]

Answer:

Congruent

Step-by-step explanation:

by definition, the base angles of an isosceles triangle are the same value.

i.e they are congruent.

8 0
3 years ago
Read 2 more answers
I need to understand question 14 and 15 and the last one cut off for tens in one
sp2606 [1]

                                                 Question # 14

Given the numbers

10     11     12     13     14     15     16     17     18     19     20

Let 'x' be the number

The condition breakdown:

I am less than 20.

  • So the number 'x' must be less than 20 i.e. x < 20

I am more than 13.

  • So the number 'x' must be greater than 13 i.e. x > 13

I am less than 17.

  • So the number 'x' must be less than 17 i.e. x < 17

Finally:

I am 4 more than 12

i.e. 12+4 = 16

Thus, the number is x = 16

                                               Question # 15

Part a)

Given the numbers

10     11     12     13     14     15     16     17     18     19     20

Let 'x' be the number

The condition breakdown:

I am more than 10.

  • x > 10

I am less than 20.

  • x < 20

I am more than 12.

  • x > 12

I am less than 15.

  • x < 15

As the numbers left after all the conditions are fulfilled are 13 and 14.

  • But the last condition is, of the numbers that left, the number is greater than all the remaining numbers.

So, from the remaining number 13 and 14;

14 > 13

Thus, the number x = 14

Part b)

Drawing the number 14 in the place value:

          Chart

Tens                Ones

1                         4

6 0
3 years ago
5. Decide whether each equation is true for all, one, or no values of x.
S_A_V [24]
C doesn’t have a value , x equals 0 , x=0
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3 years ago
Is 2x+4+3(2x-1) equivalent to 8x-2
almond37 [142]

Answer: 2x+4+3(2x-1) is not equivalent to 8x-2. it is equivalent to 8x+1

Step by step solution:

Step 1 :

Equation at the end of step 1 :

(2x + 4) + 3 • (2x - 1)

Step 2 :

Final result :

8x + 1

3 0
3 years ago
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