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3 years ago

My sister needs help with this problem !! Can you post step by step Thank you!

Mathematics

2 answers:

lora16 [44]3 years ago

6 0

Answer: (-2, 1)

Step-by-step explanation:

The only ordered pair with the x position (the left one) less than or equal to -2 is the third one where x = -2.

All other possible answers have x as positive values so they are all x > -2 and do not meet the test

Please select as Brainliest if it fits.

liq [111]3 years ago

3 0

Answer:

Step-by-step explanation:

the inequality says that x needs to be less than or equal to 2, we know the first number in an ordered pair is x-axis the only number less than 2 is -2

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If AD = 5x - 7 and AB = 2x +11, what is the length of AD

Norma-Jean [14]

Answer:

The length of AD is 6.

Step-by-step explanation:

Solve.

$5x - 7 = 2x + 11 \\ \frac{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: - 2x \: \: \: \: \: \: = - 2x \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }{3x - 7 = 11} \\ \frac{ \: \: \: \: \: \: \: \: \: + 7 = + 7}{3x = 18} \\ \\ \frac{3x}{3} = \frac{18}{3} \\ \\ x = 6$

Now plug in:

$5x - 7 \\ 5(6) - 7 \\ 30 - 7 \\ 23$

^Therefore, your result^

8 0

3 years ago

Solve for x. 7 – 4x = 31 A. x = 6 B. x = 9.5 C. x = –6 D. x = –9.5

Eduardwww [97]

7-4x= 31

Bring over 7 to the other side

Positive 7 changes into negative 7

7-7-4x= 31-7

-4x= 24

Divide by -4 for -4x and 24

-4x/-4= 24/-4

x= -6

Check answer by using substitution method

7-4x= 31

7-4(-6)= 31

7+24= 31

31= 31

Answer : C. x= -6

5 0

4 years ago

Read 2 more answers

Kevin played a trivia game. Each correct answer is worth 2 / points, and each incorrect answer is worth ⎯/ point. What was Kevi

Tju [1.3M]

Step-by-step explanation:

so if he answer correct he get 2 points but incorrect answer he get 0 so his points are 0 because he did not play a game

7 0

3 years ago

How is 8% sales tax like an 8% increase? explain.

olganol [36]

Because tax is an additional charge to the original amount therefor it is simply an increase

7 0

3 years ago

A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track

harkovskaia [24]

Answer:

C. 2.0 < t < 2.5

Step-by-step explanation:

time = distance / speed

The circumference of the lake is given by ...

C = πd = 2π miles ≈ 6.28 miles

Then Johanna's time is ...

(6.28 mi)/(3 mi/h) ≈ 2.09 h

This time is in the interval (2, 2.5), so matches choice C.

___

<em>Alternate solution</em>

If we take pi to be 3, then this boils down to ...

2×3/3 = 2 . . . hours

Pi is on the order of 5% more than 3, so her time will be on the order of 5% more than 2 hours, or just above 2, but not as great as 2.5 hours. This sort of estimating can get you to the correct answer without a calculator.

6 0

4 years ago