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lions [1.4K]
3 years ago
10

The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b?.​

Mathematics
1 answer:
krok68 [10]3 years ago
6 0

If you factor out the equation you get

(X-10)(x+9)

So the solution is -9 and 10

And you add together you get 1

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The speed of Ingrid is needed so you can calculate how fast Hubert was going.

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Which fraction shows the probability that lily will flip a heads, a tails, and then heads
schepotkina [342]

Answer:

d, 1/6

Step-by-step explanation:

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h is heads, t is tails.

h-h-h

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t-t-h

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feel free to correct me if any of this is wrong.

5 0
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What is the value of p?<br><br><br><br> 10p+5=18p–62
vlabodo [156]
The correct answer is 8.375
8 0
2 years ago
Read 2 more answers
A tent was marked up 150% from an original cost of $52. Last Friday, Ethan bought the tent and paid an additional 10% in sales t
Savatey [412]

Answer

Find out the  what was his total cost .

To prove

As given

A tent was marked up 150% from an original cost of $52.

Last Friday, Ethan bought the tent and paid an additional 10% in sales tax.

Than the equation becomes

150 % is written in the decimal form .

=\frac{150}{100}

= 1.5

10 % is written in the decimal form .

=\frac{10}{100}

= 0.1

cost of the tent when 150% marked up from origianl price = 1.5× 52

                                                                                                = $ 78


cost of the tent = origianl cost + 150% marked up from origianl price

                                  =  $52 + $78

                                  = $ 130

Sales price on the tent = $130 × 0.1

                                      = 13

Total cost of the tent = $130 + $13

                                  = $143

Therefore the cost of the tent is $143.

3 0
3 years ago
Read 2 more answers
(60 + 10)<br> 130<br> Solve for a
forsale [732]

Answer:

Step-by-step explanation:

here you go mate'

step 1

(60 + 10)130  equation

step 2

(60 + 10)130  simplify with the brackets

step 3

130(70)  multiply the numbers

answer

9100

5 0
3 years ago
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