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Firdavs [7]
3 years ago
10

Can anyone help me answer this Algebra question?

Mathematics
1 answer:
sveta [45]3 years ago
3 0

Step-by-step explanation:

{x}^{2}  - 81 = (x + 9)(x - 9)

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8 is 40% of what number? Please show your work
KengaRu [80]
Do a proportion
40/100= 8/x
8 x 100= 800
Cross multiply and divide
800 divided by 40= 20
So answer is 20
5 0
3 years ago
Read 2 more answers
Please answer BOTH questions
Lera25 [3.4K]

Answer:46.28, 193.75

Step-by-step explanation:

The first one you add (((2.5+4.7)x3.05)+1.18)x2. And the second one you (7.50+0.25)x25.

4 0
3 years ago
Help Evaluate each expression for d = -3.
Pavel [41]
Answer:
1) 9
2) 7
3) -10
4) -54
5) -64

Step-by-step explanation:
It’s just basic substitution
Hope this helps!
3 0
3 years ago
Of a group of students 5/8 of them are boys. The girls are put into groups so that each group has 1/6 of the total number of stu
Marina86 [1]
I believe the answer is 9.
3 0
3 years ago
Find m angle TUV if m angle TUN=1+38 pi m angle NUV=66^ m angle TUV=105x
ipn [44]

Answer:

m∠TUV = 105

Step-by-step explanation:

From the question given above, the following data were obtained:

m∠TUN = 1 + 38x

m∠NUV = 66°

m∠TUV = 105x

m∠TUV =?

Next, we shall determine the value of x. This can be obtained as illustrated below:

m∠TUV = m∠TUN + m∠NUV

105x = (1 + 38x) + 66

105x = 1 + 38x + 66

Collect like terms

105x – 38x = 1 + 66

67x = 67

Divide both side by 67

x = 67 / 67

x = 1

Finally, we shall determine the value of m∠TUV. This can be obtained as shown below:

m∠TUV = 105x

x = 1

m∠TUV = 105(1)

m∠TUV = 105

5 0
3 years ago
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