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3 years ago

PLS HELP ME ASAP ON 12 (SHOW WORK!) + LOTS OF POINTS!!

Mathematics

1 answer:

Rom4ik [11]3 years ago

6 0

The first thing you do is cross multiply which is 3/4x=48 (3/4 = 0.75). Therfore you divide each side by .75. The left side cancels out. For the right side you divide 48 by .75 and gives you 64. x=64

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Evaluate each expression if a= 12, b =9, c= -4 (a2/4b)+c

Contact [7]

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3 years ago

Does someone know how to do this? Pls I will give u brainliest if u do it

Papessa [141]

Answer: LP=15

Step-by-step explanation:

Ok triangle ΔNPL is congruent to ΔNML because they share side LN so side LN = LN

Angle LNP and LNM are right angles so they are congruent.

Sides PN and MN are marked congruent.

With that information we can use SAS to say those triangles are congruent.

This means that side LP=LM

so 10x-5=7x+1

Now we solve

$10x-5=7x+1\\10x-5+5=7x+1+5\\10x=7x+6\\10x-7x=7x-7x+6\\3x=6\\\frac{3x}{3} =\frac{6}{3} \\x=2$

Now we can sub in x to solve LP

10(2)-5

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3 years ago

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FromTheMoon [43]

30-(increase/0.5)*2=sold
i*s=revenue
i*30-(i^2/0.5)*2=r
I=7.5=>r=0
i=7=>r=14
7/0.5=15 number of increases in the cost

7 0

4 years ago

Read 2 more answers

Solve for x X^2+6x+9=20

Masja [62]

Answer:

x = 1.47 or x = -7.47

Step-by-step explanation:

x²+6x+9=20

This is a quadratic equation

x²+6x+9-20=0

x²+6x-11=0

Step 1 : Write the quadratic formula

x = -b±√b²-4(a)(c)

Step 2 : Substitute values in the formula

a = 1

b = 6

c = -11

x = -6±√6²-4(1)(-11)

2(1)

x = -6±√80

x = -3 + 2√5 or x = -3 - 2√5

x = 1.47 or x = -7.47

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3 years ago

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Natalija [7]

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