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Anna007 [38]
3 years ago
8

HELP PLEASE!!

Mathematics
2 answers:
Elena-2011 [213]3 years ago
7 0

Answer:

25 units

Step-by-step explanation:

Since angle B and angle C are the same, that means triangle ABC is an isosceles triangle and sides AB and AC are the same length. So we have

4x + 1 = 2x + 23

    2x = 22

       x = 11

And so subbing in 11 for x in 3x - 8

 3x - 8

= 3(11) - 8

= 33 - 8

= 25

So BC is 25 units

Whitepunk [10]3 years ago
5 0

Answer:

Just took the test and got it correct!!

Step-by-step explanation:

Look at the image down below :)))

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If f(x) = x2 + x, find f(-3).<br> -12<br> 3<br> 6
ANEK [815]

Answer:

-9

Step-by-step explanation:

-3(2) + (-3)

-6 + (-3)

-9

4 0
3 years ago
Read 2 more answers
Multiply (2x+3) (-x -2)
Marysya12 [62]

Answer:

-2x^{2} -7x-6

Step-by-step explanation:

(2x + 3) (-x - 2)

distribute first term, to the second term:

2x(-x) + 2x(-2) + 3(-x) + 3(-2)

multiply:

(-2x^{2}) + (-4x) + (-3x) + (-6)

-2x^{2} -4x-3x-6

combine the like terms:

-2x^{2} - 4x - 3x - 6

             -7x

-2x^{2} - 7x - 6

final answer :

-2x^{2} - 7x - 6

hope this helped !!

mark me brainliest :D

6 0
3 years ago
Divide. Write your answer in simplest form. 6/7 ÷ 5/21​
Serjik [45]
The answer is 8/5.
To divide fractions, flip the second fraction and multiply.
For example,
= 6/7 • 21/5
= 126/35
Simplify by dividing both sides by 7 to get your answer.
= 8/5
5 0
4 years ago
Hey there I need some assistance need on this problem. What do I mean by checkpoints and how am I supposed to find the y-interce
MakcuM [25]

Slope Formula: y2 - y1 / x2 - x1

(m and slope represent the same quantity)

m = 1 - - 5 / -4 - 0

m = 1 + 5 / -4

m = 6 / -4

m = -3/2

Now that we know the slope, we can plug the slope and one of our points into slope-intercept form (y = mx + b) and solve for b. I will be using the point (-4,1).

y = -3/2x + b

1 = -3/2(-4) + b

1 = 6 + b

b = -5

In point form, the y-intercept is (0, -5).

Therefore, to get the equation all we need to do is plug in our slope and b-value to slope-intercept form.

Equation: y = -3/2 x - 5

To check the point (-6, -14) we plug it into our equation and see if the two sides are equal.

-14 = -3/2(-6) - 5

-14 = 9 - 5

-14 = 4

-14 does not equal 4, therefore the point is NOT on the line.

Hope this helps!

6 0
3 years ago
What is the value of 2.3+8−12?<br><br> 1.) 10.8<br><br> 2.) 10.3<br><br> 3.) 9.8<br><br> 4.) 9.5
melisa1 [442]

Answer:

2

Step-by-step explanation:

to answer this algebraic question use BDMAS rule

first solve bracket then division, multiplication,addition then subtraction.

6+8-12

14-12

2

8 0
3 years ago
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