PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Rzqust [24]2 years ago

3 0

1.) 12x^2-7x-10
2.) 10x^2+31x-14

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1/2 - 3/4 equals what

n200080 [17]

1. Method 1: By Listing MultiplesList out all multiples of each denominator, and find the first common one.

2: 2 , 4

4: 4
Therefore, the LCD is 4

Method 2: By Prime FactorsList all prime factors of each denominator, and find the union of these primes.
Therefore, the LCD is 2 x 2 = 4

2. Make the denominators the same as the LCD

 $\frac{1 x 2}{2 x 2} - \frac{3}{4}$

3. Simplify. Denominators are now the same.

 $\frac{2}{4} - \frac{3}{4}$

4. Join the denominators

$\frac{2-3}{4}$

5. Simplify

 $-\frac{1}{4}$

Done! :) Decimal Form: -0.25

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3 years ago

The table shows the outputs y for different inputs x:

Harman [31]

Part A: the data represent a function because for each value of x, there is a unique value of y.

Part B: from the table, when x = 7, y = 8. from the function f(x) = 2x + 13, f(7) = 2(7) + 13 = 14 + 13 = 27.
Hence f(x) = 2x + 13 has a greater value when x = 7.

Part c: f(x) = 2x + 13 = 75
2x = 75 - 13 = 62
x = 62/2 = 31

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3 years ago

PLEASE HELP FAST! my problem is in the photo.

Xelga [282]

[c] 70°

40+2x=180
2x=140
x=70

i use 2x since the angle measures of D and C are equivalent since it is an isosceles

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2 years ago

Which three fractions are less than 40% A. 3/20 B. 23/100 C. 3/5 D. 1/8

storchak [24]

Answer:

A, B, D

Step-by-step explanation:

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3 years ago

Read 2 more answers

How do I solve this and answer?

kodGreya [7K]

Step-by-step explanation:

at first solve first triangle with Pythagorean solving witch it c²=a²+b²

you have to change a bit so it will be c²-b²=a²

you start with 8 and 10 triangle and then you get line which is in the middle and yo udo just the same with triangle 8 and the solved side and you get x in the second triangle you have to use c²-a²=b²

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3 years ago