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faltersainse [42]
3 years ago
6

Choose exactly two answers that are correct.

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
4 0
A and D are both correct answers
skelet666 [1.2K]3 years ago
4 0
A and d are correct it equals 640
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Helppppppppppppppppppppppppppppp
evablogger [386]

Answer: 33

Step-by-step explanation:

(f of g)(2) = f(g(2))

g(2) = -2(2) = -4

f(-4) = (-4)^2 - 3(-4) + 5 =

16 - - 12 + 5 =

16 + 17 =

33

7 0
1 year ago
Two angles are supplementary. If 5 times of one angle is 10 times of the other angle, find the two angles.
Luba_88 [7]
5x + 10x = 180
15x = 180
X = 12
5 x 12 = 60
10 x 12 = 120

The angles are 60° and 120°
7 0
3 years ago
Y + 6 = 5(x - 4)<br>Write the formula for f(x) in terms of x​
Mandarinka [93]

The formula for f(x) in y + 6 = 5(x - 4) in terms of x is f(x) = 5(x - 4) - 6

5 0
1 year ago
Read 2 more answers
Can anyone help me with these questions plz
KonstantinChe [14]

Answers:

  • 7:    20 miles
  • 8:    28 miles

  • 9:   1 error
  • 10:   Their speed is 50
  • 11:   365 words in 5 mins

Step-by-step explanation:

  • #7 and #8

Our equation is: f=2.25+0.20(m-1)   With f meaning "fare" (price) and m meaning "miles".

Question 7 - Juan's fare for his ride costs $6.05. We must solve for m.

Step 1. Substitute - <em>Substitute the fare for f in the equation.</em>

6.05=2.25+0.20(m-1)

Step 2. Simplify/Solve - Solve for m.

6.05=2.25+0.20(m-1)

<em>- Distribute</em>

6.05=2.25+0.2m-0.2

<em>- Subtract 0.2 from 2.25</em>

6.05=2.05+0.2m

<em>- Subtract -2.05 from 6.05</em>

4=0.2m

<em>- Divide both sides by 0.2</em>

20=m

<u>And you have your answer of 20 miles.</u>

Question 8 - Same equation, different fare.

Step 1. Substitute

7.65=2.25+0.20(m-1)

Step 2. Solve

7.65=2.25+0.20(m-1)\\7.65=2.25+0.20m-0.20\\7.65=2.05+0.20m\\5.6=0.20m\\28=m

And like so, we have m = 28

  • Questions 9 - 11

<em>The equation given is S=\frac{1}{5} (w-10e). S =  typing speed, w = words per 5 mins, and e= errors.</em>

Question 9 -

<em>We are given this information: S = 55, W  = 285. We are solving for e</em>.

Substitute -

55=\frac{1}{5} (285 -10e)

Solve -

55=\frac{1}{5} (285 -10e)\\55=\frac{1}{5} (285 -10e)\\55= 57-2e\\-2=-2e\\1=e

So they would make 1 error.

Question 10 -

<em>Information given: 300 = w, 5=e. We are solving for S</em>

Substitute -

S= \frac{1}{5} (300-10(5))

Solve -

S= \frac{1}{5} (300-10(5))\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (300-50)\\S= \frac{1}{5} (250)\\S= 50

Their speed is 50.

Question 11 -

<em>Information given: S = 65, e = 4. We are solving for w.</em>

Substitute -

65=\frac{1}{5} (w-10(4))

Solve -

65=\frac{1}{5} (w-10(4))\\65=\frac{1}{5} (w-40)\\65=\frac{1}{5}w-8\\73=\frac{1}{5}w\\365=w

So w = 365.

  • Hoped this helped!~

7 0
3 years ago
The original price of a desk is $380. The desk is on sale 20% off.
Kaylis [27]

Answer:65

Step-by-step explanation:

7 0
2 years ago
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