Mathematics High School

help please ............

Answers

Answer 1

the answer for this is -3

Related Questions

Tyler ate lunch at a restaurant. The bill came to $15. If he left a 15% tip, how much was the tip?

Answers

$2.25 because 15 x .15 = 2.25

Solve the system of linear equations below: y= 4x-9 y= x-3

Answers

ExplanationGiven the system of equations.

[tex] \begin{cases} y = 4x - 9 \\ y = x - 3 \end{cases}[/tex]

We can combine both equations

[tex]4x - 9 = x - 3[/tex]

Solve the equation.

[tex]4x - x = 9 - 3 \\ 3x = 6 \\ x = \frac{6}{3} \longrightarrow \frac{2}{1} \\ x = 2[/tex]

Then we substitute the value of x in any given equations which I will be substituting in the second equation

[tex]y = x - 3 \\ y = 2 - 3 \\ y = - 1[/tex]

Therefore, from x = 2 and y = -1, the solution is (2,-1)

Answer Check

Substitute the value of x and y in both equations.

First Equatio

[tex]y = 4x - 9 \\ - 1 = 4(2) - 9 \\ - 1 = 8 - 9 \\ - 1 = - 1[/tex]

Second Equation

[tex]y = x - 3 \\ - 1 = 2 - 3 \\ - 1 = - 1[/tex]

Both equations are true for (2,-1).

Answer

[tex] \begin{cases} x = 2 \\ y = - 1 \end{cases} \\ \sf \underline{coordinate} \\ (2,-1)[/tex]

Answer:

(2, - 1 )

Step-by-step explanation:

Given the 2 equations

y = 4x - 9 → (1)

y = x - 3 → (2)

Substitute y = 4x - 9 into (2)

4x - 9 = x - 3 ( subtract x from both sides )

3x - 9 = - 3 ( add 9 to both sides )

3x = 6 ( divide both sides by 3 )

x = 2

Substitute x = 2 into either of the 2 equations for corresponding value of y

Substituting into (2)

y = 2 - 3 = - 1

solution is (2, - 1 )

Annette has 1/4 yard of fabric. She cuts it into 3 equal pieces. Each piece of fabric is ______ yard.

Answers

Answer:

0.083

Step-by-step explanation:

I think

finding missing angles of triangles show your work

Answers

Answer:

angle = 50

x = 6

Step-by-step explanation:

solution for angle:

180-(70+60) = 50

solution for x:

8x+2=50 (subtract 2 from both sides)

8x=48 (divide both sides by 8)

x=6

The price of a DVD player changed from $400 to $255. What was the percent of decrease?

Answers

Answer:

36.25%

Step-by-step explanation:

400 - 255 = 145

145/400 = 0.3625

0.3625 = 36.25%

Answer:

36.25%

Step-by-step explanation:

(400-255)/400=145/400=0.3625=36.25%

Pleaseeee helpppp answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

z=44

Step-by-step explanation:

One way to go about this with the given angles is to use the alternate interior angles theorem to find the full measure of ∠C and ∠A. Then, use the same theorem to set ∠BDA as 52°. Subtract all the angle measures from 360 (because the sum of the interior angles of a quadrilateral is = 360 degrees). Then divide the result by 2.

360-84-84-52-52=88

=88/2

=44

So z=44°

56% of what number is $21.84?

Answers

The answer to the question above is 12.2304
Hope I help:)

Answer:

12.2304

Step-by-step explanation:

What is 56 percent (calculated percentage %) of number 21.84? Answer: 12.2304.

Choose the formula for the volume of a rectangular box, V = lwh written in terms of w.

A. w=V/ lh
B. w=hl/V
C. w=V/lh
D. w=lV/h
Part B
Find the width w of a box with volume V = 120 cm3, l = 3 cm and h = 5 cm.

Answers

Answer:

A w=V/ lh

b) 8cm

Step-by-step explanation:

w=V/ lh

w= 120/(3×5)

w= 120/15 = 8cm

HELP QUICKLY!!!!!!!!!!!!!!!

Answers

In this order it is positive, negative, negative. negative. Hope this helps. Let me know if you need anything else.

Answer:

PositiveNegativeNegativeNegative

Step-by-step explanation:

Negative x Negative is Positive. Positive x Negative is Negative. Positive x Positive is Positive.

Hope it helps!

Find the volume of a cylinder that has a diameter of 8 m and a height of 2.5
m. Use 3.14 for pi.

Answers

Answer:

V = 125.6

PLZ MARK AS BRAINLIEST

Step-by-step explanation:

V = πr²h

V = 3.14(8/2)²(2.5)

V = 3.14(4)²(2.5)

V = 3.14(16)(2.5)

V = (50.24)(2.5)

V = 125.6

Answer:

125.6

Step-by-step explanation:

πr^2 h = π·4^2 * 2.5≈ 125.66371

I NEED SOME HELP PLSS

Answers

Answer:

the y-intercept is 48; as for the other two questions I need to see your options before I can tell you the answer

Step-by-step explanation:

i don’t understand.
online school is hard

Answers

Answer: 37

Step-by-step explanation:

12^2 + 35^2 = x

144+ 1225 = x

1369

Take the square root

School is hard but don’t give up ;(

Order these numbers from least to greatest.
6.007, 6.5062, 6.07, 6.5

Answers

6.007,6.07,6.5,6.5062

Hope it is useful

Answer:

6.007, 6.5, 6.5062, 6.07

Step-by-step explanation:

Hope this helps :)) plz mark brainliest :))

Choose all of the expressions that are equivalent to 1/4 + 7/8. A. 2/8+7/8 B. 4/16+15/16 C. 8/24+21/24 D. 7/32+28/32 E. 10/40+35/40

Answers

E is correct

1 10
_ X10 = __

4 40

7 35
_ X5 = __

8 40

Answer:

A & E are correct. I have the same question as you.

Step-by-step explanation:

Just trust me its a and e

Is y=x+2 a linear function

Answers

Yes it’s a linear function

Answer: Yes Y=x+2 is a linear function.

Please help
step by step
thank you

Answers

Answer:

The answer is 12 of the students will bring lunches

Step-by-step explanation:

To find the total students divide:

32 divided by 8 = 4

Then,

4 X 3 = 12

pleaze help me on the first 2

Answers

Answer:

1) 6:9 (9 cups of flour)

2) y = 11

Step-by-step explanation:

i did the math :)

Answer:9 cups of flour and y=11

Step-by-step explanation:

guys i really need helpppp plssss

Answers

to solve this you need to do the opposite of what is shown on left side of the “=”. since it’s multiplying 2 and x, you divide both sides by 2.

2x = 18
————
2

leaving you with x=9.
im not sure, i hope that helps, it’s hard to show and explain through this.

Answer: x = 9

Explanation: Divide each term in 2x = 18 by 2. Then cancel the common factor of 2. Then you divide 18 by 2. Finally you have your answer.

please help it due in some time

Answers

Answer:

i think that it would be A.

Step-by-step explanation:

Helpeoepeoeoeo show work

Answers

IMPORTANT THIGNS TO REMEMBER:

Has 20 lb. dog food!Gives dog 1 3/5 everyday!Find how much eaten after 2 days!Find how much is left!

ANSWER:

Dog has eaten 3 1/5 after 2 days!

There is 16 4/5 left in bag!

EXPLANATION:

Since she gives 1 3/5 to her dog everyday and their asking for 2 days you would multiply 1 3/5 × 2 OR add 1 3/5 + 1 3/5

Which would give you 3 1/5

So, the dog has eaten 3 1/5 lb. of dog food in 2 days.

However then, you would subtract 20 lb. - 3 1/5 lb. because there is 20 lb. dog food in all and the dog has eaten 3 1/5 of it. This would give you 16 4/5 lb.

Meaning there is 16 4/5 lb. left in the bag of dog food!

HELP PLEASE, I CANT FAIL THIS.

Answers

Answer:

1. complementary angles

2. vertical angles

i am not sure about question 3. 4. 5

5- (not sure)

6. c

Step-by-step explanation:

A circular swimming pool is 40 inches in diameter. What is the circumference of the swimming pool?

Answers

Answer:

125.6 inches

Step-by-step explanation:

Diameter (d) = 40 inches

circumference (c)

= π * d

= 3.14 * 40

= 125.6 inches

Hope it will help :)

Answer:

125.6

Step-by-step explanation:

diameter= 40

40 x π = 125.6

40 x 3.14 = 125.6

What is the area of this triangle?
A=bh2

a-54 cm²

b-90 cm²

c-108 m²

d-216 m²

Answers

Answer:

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )

Here b = 9 and h = 12 , then

A = [tex]\frac{1}{2}[/tex] × 9 × 12 = [tex]\frac{1}{2}[/tex] × 108 = 54 cm²

It’s a because 12x9=108 then divide it by 2 and you have 54

what's the difference between two step equations and one step equations

Answers

When solving two step equations you must solve one part of the equation so that you can solve the second part.

In one step equations you can just solve the equation as is.

Answer:

A one step equation needs one step, and a two step equation needs two steps.

Step-by-step explanation:

Please help me I will give brainliest

Answers

Answer:

x<-3

Step-by-step explanation:

First we multiply by 4. We will get: -16x-12>36

Then we add 12 to both sides. We'll get -16x>48

Then we divide by -16. 48 divided by -16 is -3.

x<-3.

Answer:

x<-3

Step-by-step explanation:

Hope this helps :)

4(-4x-3)>36

Divide

-4x-3>36/4

Simplify

-4x-3>9

add 3 to each side

-4x>9+3

Simplify

-4x>12

Divide

x<-12/4

Simplify

x<-3

Half the product of two numbers m and n, minus five times a third number p

Answers

Answer:

Step-by-step explanation:

(1/2)(m)(n) - 5(p)

This is an expression, not an equation.

5 quarts for every 2 pounds. How many quarts per pound?

Answers

Answer:

2.5 righttttt?????I veeeerrrry sure it is

it’s 2.5, by dividing the quarts by the pounds you get 2.5

khanya builders are paid R480 for 8 hours of work,whiles rex builders are paid R660 for 12 hours of work.which company is paid the higher rate

Answers

Answer:

khanya pays higher

Step-by-step explanation:

You have to find the $/hr ratios:

khanya's is 480/8->$60/hr

rex's is 660/12->%55/hr

Khanya pays the higher rate

Heeeerllllllppppppppp

Answers

Answer:

x=11

Step-by-step explanation:

Answer:

x=11

Step-by-step explanation:

Triangles always add up to 180 degrees

3.1= -5.9+x, x=?
what does this answer to

Answers

Answer:

6-2=3

Step-by-step explanation:

5234.9

Answer:

x = 9

Step-by-step explanation:

3.1= -5.9+x

x - 5.9 = 3.1

x - 5.9 + 5.9 = 3.1 + 5.9

x = 9

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