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Lady_Fox [76]
3 years ago
5

If seven times a number is added to the squares of the number and the result is negative twelve, what are the numbers?

Mathematics
1 answer:
AleksAgata [21]3 years ago
6 0
Let's name the number 'n'. Now write an equation. 7*n +n^2 =12Now you can form a quadratic. n^2 +7n-12=0. Now you can use a myriad of methods to solve it. If you still need help, just message me. 
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5. Find m (5x- 2)<br> (9x - 62)
erma4kov [3.2K]

Answer:

73

Step-by-step explanation:

(9x - 62)

(9(15) - 62) =

(135 - 62) =

(73)

<u>m∠KJL </u>= 73

5 0
2 years ago
Nathan is buying a cell phone for his business. The regular price of the cell phone is $179. If he buys the phone in the next 2
m_a_m_a [10]
20% off
100-20=80

find 80% of 179

percent mean psarts ouf o 100
80%=80/100=0.8

'of' means mutipy

80% of 179=
0.8*179=143.2

saleprice=$143.20
4 0
3 years ago
Read 2 more answers
Find the gcf and use it to reduce 36/63​
alisha [4.7K]

Answer:

\frac{4}{7}

Step-by-step explanation:

The greatest common factor of 36 and 63 is 9.

Thus, \frac{36}{63} = \frac{4}{7} since (36 ÷ 9 = 4) and (63 ÷ 9 = 7).

4 0
2 years ago
Read 2 more answers
For a t distribution with degrees of freedom, find the area, or probability, in each region. a. To the right of (to 3 decimals)
ddd [48]

Answer:

a) P(t>2.120) = 0.025

b) P(t<1.337) = 0.90

c) P(t<-1.746) = 0.05

d) P(t>2.583) = 0.01

e) P(-2.120<t<2.120) = 0.95

f) P(-1.746<t<1.746) = 0.90

Step-by-step explanation:

The question is incomplete:

For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.

a. To the right of 2.120. (Use 3 decimals.)

b. To the left of 1.337. (Use 2 decimals.)

c. To the left of -1.746. (Use 2 decimals.)

d. To the right of 2.583. (Use 2 decimals.)

e. Between -2.120 and 2.120. (Use 2 decimals.)

f. Between -1.746 and 1.746. (Use 2 decimals.)

We have a t-distribution with 16 degrees of freedom.

We can calculate the probabilities with a spreadsheet, a table or an applet.

We have to calculate the probabilities of:

a) P(t>2.120) = 0.025

b) P(t<1.337) = 0.90

c) P(t<-1.746) = 0.05

d) P(t>2.583) = 0.01

e) P(-2.120<t<2.120) = 0.95

f) P(-1.746<t<1.746) = 0.90

8 0
3 years ago
Can you help me with this problem: Elena and Jada both read at a constant rate, but Elena reads more slowly. For every 4 pages t
Paraphin [41]

4 pages Elena = 5 pages Jada

To figure out how many pages Jada reads if Elena reads 1, divide 5 by 4: 1.25. This means that for every 1 page Elena reads, Jada reads 1.25 pages.

So if Elena reads 9 pages, multiply 1.25 by 9: 11.25 pages that Jada reads.

For S pages read by Elena, this is a variable, so I’m assuming it means for every S pages, Jada reads 1.25S

7 0
3 years ago
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