Mathematics College

Which ordered pair is a solution of the equation?
y = 7x - 3

A. Only (1,4)
B. Only (-1,-4)
C. Both (1,4) and (-1,-4)
D. Neither

Please explain/show work if you can. Whoever is correct gets brainliest :-)

Answers

Answer 1

Answer:

The Answer is A  only (1,4)

Step-by-step explanation:

Related Questions

-6z+(-5.5) + 3.5z + 5y - 2.5?

Answers

Answer:

-3.5z - 8 + 5y

Step-by-step explanation:

simplify -6z + -5.5 + 3.5z + 5y - 2.5

− 25z+5y−8

DIFFERENTIATE W.R.T. Z

−2.5

26) True/False (1 point): Vertical angles, corresponding angles, and supplementary angles are all congruent angle pairs.

Answers

Answer:

I say the answer will be true

Answer:

true

Step-by-step explanation:

PLEASE ANSWER ASAP FOR BRAINLEST !!!!!!!!!!!!!!!!!!!!

Answers

Answer:

392

Step-by-step explanation:

4.Rebecca biked 4.5 miles today and 3.2 miles
yesterday. If her goal for the week is 10 miles,
how much farther does she need to bike

Answers

Answer:

10-(4.5+3.2)

= 10-7.7

=2.3 miles

Solve for x.

−3(x+5)=−9

Answers

Answer:

x=-2

Step-by-step explanation:

Divide by -3 and solve for x

−3(x+5)/-3=−9/-3

x+5=3

x=3-5

x=-2

What is the area? Write your answer as a fraction or as a whole or mixed number.​

Answers

Answer:

81 or 20 1/4

Step-by-step explanation:

im not sure sorry

Answer:

[tex] \frac{1681}{4} [/tex]

or

[tex]105 \frac{1}{4} [/tex]

Step-by-step explanation:

[tex]10 \frac{ + 1}{ \times 4} [/tex]

10×4=40+1=41, that will be your numerator (number at the top of the fraction) and the denominator 4 will stay the same. (bottom number)

[tex] \frac{41}{4} [/tex]

the base and the height will remain the same.

Formula : base × height = Area

[tex] \frac{41}{4} \times \frac{41}{4} = \frac{1681}{16} [/tex]

16 goes into 1681 105 times remainder 1.

so as a mixed number it will be

[tex] 105 \frac{1}{4} [/tex]

8th grade math, please help.
I’ll give you brainliest if you want.

-Find the volume-
*links are reported*

Answers

Volume: 4/3 (pi)(r)^3

Volume: 4/3 (pi)(5)^3 = 523.6 in
(I believe)

can someone anwser this please:)


x^2 + 9x + 20

Answers

Answer: (x + 5) x (x +4)

step by step explanation: factor the expressions

If DE=6x what is the perimeter of the triangle in terms of x?

A 6
B 18
C 18x

Answers

May be another Lala La La La La La La La La La La La La La La La La La La la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la

fractions 4/16 2/8 15/60 3/9 which fraction is not equivalent to 1/4​

Answers

Answer:

3/9

Step-by-step explanation:

3/9 budyy :))))))))

Carol drew an isosceles triangle that has an angle that measures 62°. Which could be the measures of the other two angles in Carol’s triangle?
A. 62° and 62°
B. 56° and 56°
C. 28° and 90°
D. 56° and 62°

Answers

Answer: the answer is B

Step-by-step explanation:

Answer:

56 and 62

Step-by-step explanation:

A number is twice the other number. The sum of four times the smaller number and three times the larger number is 10. Find the numbers.

Please teach me how to do this. I'll give 90 points.

Answers

Answer:

1 and 2

Step-by-step explanation:

Let the first number be x

Let the other number be y

x = 2y.....eqn 1

From eqn 1, the smaller number is y while the bigger number is x.

3x + 4y = 10.... eqn 2

Substitute x = 2y into eqn 2

3(2y) + 4y = 10

6y + 4y = 10

10y = 10

Divide both sides by 10

y = 10/10

y = 1

Substitute y= 1 into eqn 1

x = 2y

x = 2(1)

x = 2

What is the answer to this question? 4w+8=6w-4

Answers

Answer:

6

Step-by-step explanation:

hope this helps

Explanation: For this question you’ll be combining each side.

4w+8=6w-4

1. You’ll want to do the opposite of what your factor already is so, positive 4w will become -4w. Subtract 4 from 4, subtract 4 from six and you now have 2w.

2. Next, you’ll need to rewrite your new equation (8+2w-4) mind you *4 is cancelled out since we subtracted it from itself*.

3. Add four on each side now, so you’ll have (12+2w) and no more 4 because we ADDED to the variant.

4. Last but not least, you’ll want to divide each side, but only BY the variable. So it would be 12/2 and 2/2, and you get your answer ..

Answer = 6

PLEASE ANSWER ANY QUESTIONS ASAP THANK YOU SO MUCH

Answers

fw me on some points

on a scale drawing 2 inches represents 30 feet how many inches long is a line segment that represents 10 feet

Answers

Answer:

2/3 inch.

...................

Answer choices
36
32
28
Please help due now

Answers

Answer:

36 it should be pretty easy but no problem

what is 25x + 17y - 3x - 2y equal to?

Answers

Answer:

22x+15y

Step-by-step explanation:

How many solutions does x2 - 2x + 9 = 0 have and what type are they? Do NOT find the
actual solutions.

Answers

Answer:

3

Step-by-step explanation:

Look first at problem then answer 2-6
NO SPAM and EMERGENCY PROBLEM

Answers

2) You need pi because of the circumference to calculate how long the perimeter is.
3) 113.1 = Area
4) You would need to adjust how many number places of pi you use for how huge the number you need to calculate for.
5) To write an exact number for an irrational expression you need to calculate then round to the nearest hundredths after you get the number for either radius, diameter, or area. To find the approximate value you only use the minimum numbers such as 3.14 instead of 3.14159...
6) How this helped me better estimate the value of an irrational expression is by using more numbers for every extra number place the circle has in the diameter.

Write the equation of this circle in standard form.

Answers

Answer:

x² + y² = 16

Step-by-step explanation:

(x-h)² + (y-k)² = r²   -- The standard form of equation of circle

(x-0)² + (y-0)² = 4²

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the past 30 days, with an allowable sampling error (E) of 0.03 and a confidence level of 99.74%. Of secondary data indicated that 25% of all adults had used the Internet for such a purpose, what is the sample size

Answers

Answer:

The sample size is 1875.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

Sampling error of 0.03.

This means that [tex]M = 0.03[/tex]

99.74% confidence level

So [tex]\alpha = 0.0026[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.0026}{2} = 0.9987[/tex], so [tex]Z = 3[/tex].

25% of all adults had used the Internet for such a purpose

This means that [tex]\pi = 0.25[/tex]

What is the sample size

The sample size is n. So

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.03 = 3\sqrt{\frac{0.25*0.75}{n}}[/tex]

[tex]0.03\sqrt{n} = 3\sqrt{0.25*0.75}[/tex]

Simplifying by 0.03 both sides

[tex]\sqrt{n} = 100\sqrt{0.25*0.75}[/tex]

[tex](\sqrt{n})^2 = (100\sqrt{0.25*0.75})^2[/tex]

[tex]n = 1875[/tex]

The sample size is 1875.

Mr. Young is buying a house. He can spend no more

than 29% of his income on monthly house payments.

If he earns $4,200 per month, what is the largest

monthly house payment he can make?

Answers

Answer:

The largest monthly house payment he can make is $1,218.

Step-by-step explanation:

In this question:

He spend at most 29% of his income on monthly house payments.

His monthly income is of $4,200.

What is the largest monthly house payment he can make?

0.29*4200 = 1218

The largest monthly house payment he can make is $1,218.

I need help on question 7 :)

Answers

Answer:

D

Step-by-step explanation:

is the only choice that actually helps in solving the equation

Answer:

D. Substitute -3x+4 in for y in the first equation.

What are the like terms in the expression
5x+9+4x

Answers

Step-by-step explanation:

[tex]5x \: and \: 4x \: are \: like \: terms \: in \: here[/tex]

Answer:

5X AND 4X

Step-by-step explanation:

Can y’all help me on question 29?!

Answers

Answer:

Step-by-step explanation:

Are the triangles similar? Justify your answer​

Answers

Answer:

Yes

Step-by-step explanation:

If you divide all the sides of the larger triangle by 3, it's equivalent to the sides of the smaller triangle. Therefore, they are similar.

find the value of X in the figure shown

Answers

Answer:

17

Step-by-step explanation:

∠CDE is a 90 degree's, and it splits, because ∠CZB said that it is 39 degrees, thus meaning that the degree of ∠BZD=51, and x=17, because 17*3=51.

I know this will be helpful to you  

3 7/10 + 5 3/4 + 3/4

Answers

Answer: 10.2 = 10 1/5

Step-by-step explanation:

Angel got 4 problems wrong on a test of 50 questions. What percent of the questions did he get CORRECT

Answers

Answer:

12.5%

Step-by-step explanation:

Answer:

92%

Step-by-step explanation:

50-4 = 46

46/50 *100 = 92%

Mr. Allenby spent​ $34 for 6 movies. If each movie is the same​ price, how much would he have to spend for 24​ movies?

Answers

Answer: I think it $136

Step-by-step explanation:

Answer:

$136

Step-by-step explanation:

If Mr. Allenby spent $34 on 6 movies we know that each movie costed roughly $5.67

(34 / 6 = 5.666...)

Knowing this we can multiply $5.67 by 24 which equals $136

(5.666... x 24 = 136)

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