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Butoxors [25]
3 years ago
12

The solution to 2x2 – 11 = 87 is .

Mathematics
2 answers:
Klio2033 [76]3 years ago
8 0

Answer:

x = 7, -7

Step-by-step explanation:

2x² - 11 = 87

2x² = 98

x² = 49

x = +/-7

ohaa [14]3 years ago
5 0

Step-by-step explanation:

<u>Step 1:  Subtract 87 from both sides</u>

2x^2 - 11 - 87 = 87 - 87

2x^2 - 11 - 87 = 0

<u>Step 2:  Factor</u>

2x^2 - 11 - 87 = 0

2(x + 7)(x - 7) = 0

x + 7 = 0 and x - 7 = 0

x = -7 and x = 7

Answer:  x = -7, 7

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soldi70 [24.7K]

Answer:<u> -0.9 ; inelastic</u>

Explanation:  

Given:

The average price of wheat per metric ton in 2012 = $305.75

Demand (in millions of metric tons) in 2012 = 672

The average price of wheat per metric ton in 2013 =  $291.56

Demand (in millions of metric tons) in 2013 = 700

We will compute the elasticity using the following formula:

ε = \frac{\frac{(Q_{2} - Q_{1})}{\frac{(Q_{2} +Q_{1})}{2}}}{\frac{(P_{2} - P_{1})}{\frac{(P_{2} +P_{1})}{2}}}

ε = \frac{\Delta Q}{\Delta P}

Now , we'll first compute  \Delta Q

i.e.  \frac{\Delta Q}{\Delta P} = \frac{(700 - 672)}{\frac{(700 +672)}{2}}

\Delta Q = 0.04081

Similarly for  \Delta P

i.e. \Delta P = \frac{(291.56 - 305.75)}{\frac{(261.56 +305.75)}{2}}

\Delta P = -0.0475

ε = \frac{0.04081}{-0.0475}

ε = -0.859 \simeq -0.9

\because we know that ;

If, ε > 1 ⇒ Elastic

ε < 1 ⇒ Inelastic

ε = 1 ⇒ unit elastic

<u><em>\because Here , ε = -0.859 \simeq -0.9 </em></u>

<u><em>Therefore ε is inelastic.</em></u>

6 0
4 years ago
the delivered price of leah st clairs new car is 22450. she makes a 2800 down payment and pays the balance in 36 monthly payment
Degger [83]

Answer:

Total amount paid for the Car=$24,832

Finance Charge=$2,382

Step-by-step explanation:

Down payment on the Car=$2800

Number of Monthly Installments=36

Amount Paid Per Installment=$612

Total Monthly Installment Paid=36*$612=$22032

Therefore, the Total Amount Paid for the Car=Down Payment+Total Installmental Payment=2800+22032=$24,832

Next, we determine the finance charge.

Finance Charge=Total Amount Paid for the Car - Delivered Price of the Car

=24832-22450

=$2,382

Therefore:

Total amount paid for the Car=$24,832

Finance Charge=$2,382

8 0
3 years ago
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Sergeeva-Olga [200]

Standard Form is ...

ax + by = c

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8 0
3 years ago
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we are given

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now, we can solve integral

\int \:8\sec \left(t\right)dt

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3 years ago
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IRISSAK [1]
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