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3 years ago

Solve x ^ 2 + 10x = -21.

Mathematics

2 answers:

8_murik_8 [283]3 years ago

6 0

Answer:

X = -7, -3

(AKA B)

gladu [14]3 years ago

5 0

Answer:

x= -7 and x= -3

Step-by-step explanation:

x^2 + 10x = -21

= X^2 + 10x + 21 (Bring the -21 to the other side to make it positive)

factor the equation...

= (x+7)(x+3)

x= -7 and x= -3

if you need help on how to factor I can help

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Jessica wants to buy a new chair that has a regular price of $75.00 this week the chair will be on sale at a 12% discount how mu

Novosadov [1.4K]

Answer: $9.

Step-by-step explanation:

It is given that,

Regular price of a new chair = $75.00

This week the chair will be on sale at a 12% discount. So,

Rate of discount = 12%

We need to find the amount of money that will Jessica save if she buys the chair this week.

$Discount=12\%\text{ of }\$75.00$

$Discount=75\times \dfrac{12}{100}$

$Discount=9$

Therefore, Jessica will save $9 if she buys the chair this week.

8 0

3 years ago

What are the binomial factors of the following expression x2+5x-6

andre [41]

(x-1) (x+6) is the answer

5 0

3 years ago

Alexander is a high school basketball player. In a particular game, he made some two point shots and some three point shots. Ale

andrezito [222]

Answer:

2 three points shots and 4 two points shots

Step-by-step explanation:

Let x be the number of three points shots.

Alexander made twice as many two points shots as three points shots, so the number of two points shots is 2x.

Amount earned in three points shots $=3\cdot x$

Amount earned in two points shots $=2\cdot (2x)=4x$

Total score $=3x+4x=7x$

Alexander scores a total of 14 points, then

$7x=14\\ \\x=2\\ \\2x=2\cdot 2=4$

7 0

3 years ago

A housefly can fly about 6.4 feet per second. At this rate, how far can it fly in 25 seconds? Justify your answer by using the D

ollegr [7]

Answer:

160 Seconds or 2 minutes and 45 seconds

Step-by-step explanation: So 6.4x25=160 seconds or 2 min 45 sec

4 0

3 years ago

On a coordinate plane, triangle UVW has coordinates U(20, -12), V(8,6), and W(-24,-4). Tianghle U'V'W' has coordinates U'(15, -9

snow_tiger [21]

Each coordinate of U'V'W' is 3/4 of that of UVW.

Triangle U'V'W' is a dilation of triangle UVW about the origin with a scale factor of 3/4.

_____

15/20 = -9/-12 = 6/8 = 4.5/6 = -18/-24 = -3/-4 = 3/4

8 0

3 years ago