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never [62]
3 years ago
6

Can someone help me in these questions please

Mathematics
1 answer:
Solnce55 [7]3 years ago
7 0

Answer:

5. 20/30, 8/12

6. 4/16, 14/56

7. 8/40, 4/20

8. 344/ 400, 215/ 250

hope this helps :)

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It’s 2x^2 + 5x - 3.
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I really need help! This is last minute and its 1 am. I'm tired so I'm going to leave it to you guys to solve my problems and pr
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Answer:

<h2><u>question 1</u></h2>

n^{2} - 20n -96 = 0

use product and sum method

product = -96

sum = -20

numbers needed = ( -24 , 4)

n - 24 = 0

n + 4 = 0

hence <u>n = 24 and n = -4 </u>

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<h2><u>Question 2 </u></h2>

<u />x^{2} + 12 x = 48<u />

in the form ax^{2}  +bx +c = 0

= x^{2} +12x - 48

make use of the formula :

\frac{-b+-\sqrt{b^{2} -4ac} }{2a}

replace values to make 2 equations :

1.\frac{-12+\sqrt{12^{2} -4*1*-48} }{2*1} = 3.17

2.\frac{-12-\sqrt{12^{2} -4*1*-48} }{2*1} = -15.2

hence <u>x = 3.17 and x = -15.2</u>

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<h2><u>Question 3 </u></h2>

<u />x^{2} -14x+40=0<u />

use product and sum method

product = 40

sum = -14

numbers needed = (-10 , -4)

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<h2><u>Question 4 </u></h2>

<u />5b^{2} -20b-18 = 7<u />

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this becomes 5b^{2} -20b-18-7

= 5b^{2} -20b-25

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= b^{2} -4b-5 =0\\

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product = -5

sum = -4

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b-5 = 0

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4 years ago
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What line is perpendicular to the line 6x+y=-4
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Step-by-step explanation:

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How many solutions does the equation: 4x-8=2(2x-4) have?
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Your answer is Infinite solutions
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If ABCD congruent to QRST, measure of angle A = x – 10º, and measure of angle Q = 2x – 30º, what is the measure of angle A?
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Congruent means they are the same,

A and Q are both the first letters, which mean they would also be the same.

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3 years ago
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