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2 years ago

10

Unknown Angle Problems (with algebra)

1 answer:

Natalija [7]2 years ago

4 0

the answer is on the picture with solving

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(no links or files) Solve this equation using the quadratic formula. This question should be solved both ways. (1) Quadratic For

meriva

Quadratic formula is x = -b+ or- sq rt b^2-4ac / 2a
a=2 b=5 c=-3
-5 +or- sqrt 5^2-4(2)(-3) / 2(2)
-5 +or- sqrt 49/ 4
-5 + 7 /4 = 2/4 = 1/2
-5 - 7 /4 = -12/4 = -3

Factoring a*c is 2*-3 =-6
Factors of -6 that add to 5 are 6 and -1
Split 5x into +6x-1x
2x^2+6x-1x-3 and group
2x(x+3)-1(x+3)
(x+3)(2x-1)=0
x+3=0 gives x=-3
2x-1=0 gives x=1/2

4 0

2 years ago

Espen predicted that he would sell 32 baseball caps but he actually sold 29 baseball caps which expression would find the percen

Gre4nikov [31]

Answer:

B

Step-by-step explanation:

This is the correct answer because the difference between 32 and 29 is 3 and the intial price is 32, Hence 3/32 (100)

6 0

3 years ago

Can someone please answer this question please answer it correctly please show work

Zina [86]

Answer:

34) A

35) C

36) D

Step-by-step explanation:

34) The perimeter of a triangle is equal to the sum of the lengths of its sides

Sides: (6.2p + 4.5q) + (3.4p - 0.7r) + (2.9r - 4.1q)

Combine like terms (same variables)

(6.2p + 3.4p) + (4.5q - 4.1q) + (2.9r - 0.7r)

9.6p + 0.4q + 2.2r

A

35)

Time possibilities

1 hour - $3 - $5 = $-2 No

2 hours - $6 - $5 = $1 Yes

3 hours - $9 - $5 = $4 Yes

4 hours - $12 - $5 = $7 Yes

5 hours - $15 - $5 = $10 Yes

6 hours - $18 - $5 = $13 Yes

7 hours - $21 - $5 = $16 Yes

8 hours - $24 - $5 = $19 No

9 hours - $27 - $5 = $22 No

The possible hours that Ms. Barnes can park are 2 - 7 hours

The only inequality graph that represents all of these values is C

36)

<h3> $(-\frac{4}{7}) / (-\frac{3}{4}) * (-2\frac{1}{3})$ </h3>

Convert to improper fractions

<h3> $(-\frac{4}{7}) / (-\frac{3}{4}) * (\frac{-7}{3})$ </h3>

Divide by finding the reciprocal

<h3> $(-\frac{4}{7}) * (-\frac{4}{3}) * (\frac{-7}{3})$ </h3><h3 /><h3> $\frac{16}{21}$ * $-\frac{7}{3}$ </h3><h3 /><h3> $\frac{-16}{9}$ </h3>

Convert back to a mixed number

$-1\frac{7}{9}$

D

Hope this helps :)

8 0

3 years ago

Which toy pack has a cost of $2.50 per toy?

defon

YoYo. 15/6 = 2.5 so each YoYo costs $2.50.

5 0

3 years ago

Read 2 more answers

I need help with This question no links or I will report you

brilliants [131]

Answer:

Below.

Step-by-step explanation:

So let's do this Divide both sides.

equals to,

y+2>2

Cancel out equal terms.

y>0.

5 0

2 years ago