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Lisa [10]
3 years ago
12

Plzzz help, the quicker the better!!!!!!

Mathematics
1 answer:
pishuonlain [190]3 years ago
7 0

Answer:

26

Step-by-step explanation:

here,

the lower angle when sumed,

it is like: 154+a=180 (let angle be a) being supplementary angle sum is 180

so value of a becomes 26

then,

the above angle x is corresponding to angle a (a=x)

So value x is 26

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3z squared minus 6z if z = 5
max2010maxim [7]

Answer:

45

Step-by-step explanation:

Given

3z² - 6z ← substitute z = 5 into the expression

= 3(5)² - 6(5)

= 3(25) - 30

= 75 - 30

= 45

4 0
3 years ago
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Simplify the expression
erastova [34]

Answer : A

We need to simplify the given expression

Lets factor numerator first

2x^2-5x-3 =(2x+1)(x-3)

x^2+8x+15 =(x+5)(x+3)

Now we factor the denominator

x^2+x-20 =(x+5)(x-4)

2x^2+9x+4 =(2x+1)(x-4)

Now we simplify it

\frac{(2x+1)(x-3)}{(x+5)(x-4)} * \frac{(x+5)(x+3)}{(2x+1)(x-4)}

Now cancel out same factors. so we left with

\frac{(x+3)(x-3)}{(x+4)(x-4)} }

Now multiply the factors

\frac{x^2-9}{x^2-16} }



6 0
3 years ago
7th grade math help me plzzz
murzikaleks [220]

Answer:

a. -7 + 3

b. draw 7 negatives + 7 positives

Step-by-step explanation:

5 0
3 years ago
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Solve: 12 dogs decreased by 25% step by step pls.
Annette [7]
Decreased by 25%
find 25% of 12 and decrease 12 by it

percent means parts out of 100
25%=25/100=1/4
'of' means multiply
25% of 12=1/4 times 12=3

decrease 12 by 3
12-3=9

answer is 9
8 0
3 years ago
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What is the chance of rolling a 4 with a single die four times in a row?
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Answer:

16.66

Step-by-step explanation:

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