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Mnenie [13.5K]
3 years ago
14

Lines AB and CD are parallel. If 7 measures (3x + 7)°, and 6 measures 76°, what is the value of x?

Mathematics
1 answer:
taurus [48]3 years ago
6 0
Do you have a picture or something
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Negative one times the sum of twice a number and 3 is equal to 2 times the
den301095 [7]
Lets just say the number is equal to x.
-1(2x+3)=2*(-4x-3)
Distribute on both sides
-2x-3=-8x-6
Add 3 to both sides
-2x=-8x-6
Add 8x to boths sides
6x=-6
Divide Both Sides by -1
x=-1
The numbers is -1.

3 0
3 years ago
HELP, thanks, If a triangle has a side length of 8 inches, and another side length of 5 inches, which of the
Anna71 [15]

Answer:

a. 7

Step-by-step explanation:

So a triangle a two sides that will always sum up to be greater than the third side.

Meaning:

a + b > c

a + c > b

b + c > a

So here, we're given a and b:

8 + 5 > c

8 + c > 5

5 + c > 8

Plug in the values:

13 > 7

15 > 5

12 > 8

These are all true, so it's probably 7.

13 > 2

10 > 5

7 > 8 This one is not true, so not 2.

13 > 13 This is not true, so not 13.

If not 13, we can't go any higher and so it can't be 15.

4 0
4 years ago
Simplify the expression below.<br> (3-13)²+14/4²-5·2
Natalija [7]
Calculate the difference, Reduce the fraction with 2, Multiply the numbers

(-10)^2+(7/2)^2-10


To raise a fraction to a power, raise the numerator and denominator to that power

100+49/4 -10

Calculate the sum

409/4

Or

102 1/4

Or

102.25

3 0
3 years ago
Um help! how do I do this?
valkas [14]
1/2 t-4(2+t)=20
1/2 t-8-4t=20
least common multiple=2
t-16-8t=40
-7t=40+16
-7t=56
t=56/-7=-8

Answer: t=-8

To check
-8/2 - 4(2-8)=-4-4(-6)=-4+24=20
5 0
3 years ago
Read 2 more answers
What is (f - g)(x)?<br> f (x) = 24 – 22 + 9<br> 9(2) = 23 + 3x2 + 12<br><br><br> (f - g)(x) = ???
bija089 [108]

Answer:

(f - g)(x) = x^4 - x^3 - 4x^2 - 3

Step-by-step explanation:

Subtract  g(x)=x^3 + 3x^2 + 12 from f(x)= x^4 - x^2 + 9

First, take the negative of every term (including the label g(x) ) of g(x), obtaining  -g(x) = -x^3 - 3x^2 - 12.

Now combine this result with f(x):

 f(x)= x^4 - 0x^3 - x^2 + 9

-g(x) =       - 1x^3 - 3x^2 - 12

---------------------------------------

(f - g)(x) = x^4 - x^3 - 4x^2 - 3

7 0
3 years ago
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