Y=2x+1 x+y=7 pls help meeeeeeeee

Answers

Answer 1

Answer:

[tex]y = 2x + 1 \\ substitute \: for \: y \: in \: x + y = 7 \\ x + (2x + 1) = 7 \\ 3x = - 6 \\ x = - \frac{1}{2} \\ y = 2( - \frac{1}{2} ) + 1 \\ y = - 1 + 1 \\ y = 0[/tex]


Related Questions


A cube has edges measuring 7 centimetres each. Determine the surface
area of the cube.

Answers

Answer: I think its 294cm²

Look at the right triangle on the coordinate grid

A. 11

B. 24

C. 73

Answers

A i’m pretty sure is the answer

Answer:

i believe 73 is the answer

first to answer correctly please actully try and an explanation if u can ! :) thanks

Answers

Answer: The total of all side lengths must equal 180 degrees

Step-by-step explanation:

if you take 180-100=80 then you have the two missing angles, divide 80 by 2 and you get 40 so 1 x measurment equals 40 degrees

Devin is making a candle by pouring melted wax into a mold in the shape of a square pyramid. Each side of the base of the pyramid is 6 cm and the height of the pyramid is 9 cm. To get the wax for the candle, Devin melts cubes of wax that are each 4 cm by 4 cm by 4 cm. How many of the wax cubes will Devin need in order to make the candle? Show your work.

Answers

The volume of the square pyramid is 6 x 6 x 9/3 = 108 cubic cm.

Volume of the cube = 4 x 4 x 4 = 64 cubic cm

Number of cubes needed: 108/64 = 1 11/16 cubes (1.6875)

Answer:

Solution given:

square pyramid

each side of base[b]=6cm

height[h]=9cm

Volume of square pyramid[V]=[tex] \frac{1}{3 } {b}^{2} h \\ \frac{1}{3} {6}^{2} \times 9 = 108cm ^{3} [/tex]

now

length of cube [l]=4cm

volume of cube[v]=l³=4³=64cm³

now

no of wax needed=[tex] \frac{V}{v} [/tex]=[tex] \frac{108cm³}{64cm³} [/tex]=[tex] \frac{27}{16 } =1\frac{11}{16} [/tex]

is needed.

Describe and correct the error in solving the equation.

27 = n-15

-15 +15

12 = n

Answers

The error is that 15 was subtracted on the left side when it should’ve been added.
Corrected equation:
27 = n-15
Add 15 to both sides
42 = n

Please help me find the answer !

Answers

Answer:

x = 12

y = 6√3

Step-by-step explanation:

✅Apply the intersecting secant theorem to find x. Thus:

6(6 + x) = 7(7 + 8³/7)

Convert the mixed fraction to improper fraction

6(6 + x) = 7(7 + 59/7)

36 + 6x = 49 + 59

36 + 6x = 108

6x = 108 - 36

6x = 72

Divide both sides by 6

x = 72/6

x = 12

✅Apply the tangent-secant theorem to find y. Thus:

y² = 6(6 + x)

Plug in the value of x

y² = 6(6 + 12)

y² = 6(18)

y² = 108

y = √108

y = 6√3

NO LINKS please. Someone help

Answers

Answer:

square root of 65

Step-by-step explanation:

all i am going to say is, Pythagorean theorem.

Which scenario does not represent exponential growth?
mold growing on stale bread
A species of fish doubles its population every month during the summer.
The value of a bank account with quarterly compounded interest after 6 years
A vine grows 6 inches every week.

Answers

Answer:

I believe the correct answer is - The value of a bank account with quarterly compounded interest after 6 years.

I'm not sure if this is 100% correct but hope it helps.

A man travels 2 miles, turn left and travels 3 miles, turn left again and travel 6 miles. How far is he from the starting point?​

Answers

Answer: 5 miles

Step-by-step explanation:

this creates a polygon which can be shortened to be a triangle with side lengths 3 and 4 and the hypotenuse unknown. to find the side length you use the formula a^2 + b^2 = c^2

3^2 + 4^2 = c^2

9 + 16 = c^2

25 = c^2

sqrt(25) = c

c = 5

write an equation for the line that is parellel to the given line and that passes through the given point?
y = 2x + 7; (3, 11)

a.y = 2x – 19

b.y=1/2x+5

c.y= -1/2x-5

d.y = 2x + 5

Answers

Answer:

y = 2x + 5 (answer d)

Step-by-step explanation:

Parallel lines have the same slope, and thus, if we're given y = 2x + 7, we know that the slope of the 'new' line is 2.  This 'new line' passes through (3, 11).  Begin with the point-slope formula y - k = m(x - h) and substitute 3 for h, 11 for k and 2 for m:

y - 11 = 2(x - 3)

Rewriting this in slope-intercept form, we get:

y = 2x - 6 + 11. or y = 2x + 5 (answer d)

On a fith grade benchmark exam with 55 questions total sunny answerd 80 % of them how many questions did he answer correctly

Answers

Answer:

44 answers

Step-by-step explanation:

80% of total questions are answered, ie 80% of 55 questions are answered.

So, (80/100) x 55 , ie 44 questions are answered.

Assuming that all answered questions are correct, 44 answers are correct.

What is the value of x?
a . 75
b . 25.5
c . 8
d . 4.5

help meeee

Answers

Answer:

d. 4.5

Step-by-step explanation:

10x-5=16x+22

    -22      -22

10x-27=16x

-10x      -10x

-27=6x

x=4.5

The answer is d 4.5

What is the value of x?


Enter your answer in the box.

x =

Answers

Answer:

x = 4

I just took the test!

This is correct!!

Is six pen cost $2.10 what is the unit price of the pen?

Answers

Answer:

3.20

Step-by-step explanation:

Answer:

0.35

Step-by-step explanation:

i just divided 2.10/6

HELP ME WHATS THE VALUE OF X?

Answers

Answer:

Step-by-step explanation:

Total sum of degrees of a Triangle is 180 deg

Than: 8x-7 + x +7 + 2x + 15 = 180

11x + 15 = 180

x = (180-15) / 11  =15

Answer: 15

I need help with this question​

Answers

Answer:

I thinks its F because you cant factor it

Step-by-step explanation:

Answer:

F) The expression does not have a real factor

What is the MEAN of the data - (12, 8, 6, 12, 16, 12) *

helppp

Answers

Answer: the mean is 11

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

Add them all together then divide by the nuber of variables

number decreased by 8 is equal to 20

Answers

Answer:

Step-by-step explanation:

28

Answer:28

Step-by-step explanation:

28-8

anyone know ??? i need help badly right now

Answers

Answer:

Answer is A 520mm²

I hope you like it

Answer:

9. C, II and III.

10. The correct answer is 944 cubic mm, as far as I can tell. I double checked my formulas and calculations. You can copy the formulas/calculations below and email your teacher. I have tried to figure out how they got the numbers they have. The best guess I can come up with is that they used 6 as the diameter of the cylinder, using 3 for the radius. That gets us closer, at 749 cubic mm, but not quite there.

Step-by-step explanation:

9.  If the cylinder is standing upright, the horizontal cut would be a circle or oval, and the vertical cut could be a rectangle

10. First we'll get the volume of the base rectangle. Then we'll calculate the volume of a cylinder, then divide that part in half, because it's 1/2 a cylinder on top of a rectangular prism.

Volume of a rectangular prism:

V = (length)(width)(height)

= 11 x 9 x 6 = 594 cubic mm

Volume of a cylinder:

V = (pi)(radius)^2(height)

The radius = 1/2 the diameter of the circle...the diameter is 9, so the radius is 4.5

= (3.14)(4.5)(4.5)(11)

= 699.435

That would be for a full cylinder with radius 4.5 and height of 11. We have half of one, so 699.435/2 = 349.7175 cubic mm

Add the volume of the 1/2 cylinder to the volume of the rectangular prism:

349.7175 + 594 = 943.7175, rounded = 944...which is none of your answers :/

Sorry I couldn't give you an "A, B, C, D" answer, but I don't think any of those are correct.

Please help thank you

Answers

Answer:

hdjhdhdhdjdvdvddiwhegwiwiwhegeeuui

Jayce bought 12 balloons. 3/9 of the balloons are yellow. how many yellow balloons are there?

Answers

Answer:

4

Step-by-step explanation:

3/9 is the same as 1/3 so 1/3 or 12 is 4

Answer:

4

Step-by-step explanation:

Please someone help I need to turn this in soon !!

Answers

Answer:

6

Step-by-step explanation:

18/3=6

Yes or no ??????????

Answers

Answer:

[tex]yes[/tex]

because it has a one side, length and base

help please? anyone?

Answers

Answer:

"so i need to find e missing side of each right triangle, side c is the hypotenuse!! a = 8.8ft, b= 9ft i have to round the answers to the nearest tenth if necessary "

Step-by-step explanation:

Sure! So remember that the Pythagorean theorem is a squared plus b squared = c squared.

= 8.8 squared + 9 squared = c squared

= 77.44 + 81 = c squared

[tex]\sqrt{158.44}[/tex] = c squared

c squared = (rounded) 12.6 ft

which of these ARE NOT equivalent?
I NEED HELPPP

Answers

Answer:

the first one I'm pretty sure

Step-by-step explanation:

I tried the other ones

5. If f (x) = -4x + 7. what is:
a. f(0)
b. f(-2)
c. Write part (a) & (b) as ordered pairs.

Answers

Answer:

f(0) = 7     f(-2) = 15    (7,15)

Step-by-step explanation:

f(0) = -4(0) + 7 = 7

f(-2) = -4(-2) + 7 = 15

(7,15)

Work out size of Angle x

Answers

Answer:

106

Step-by-step explanation:

all 3 of the angles add up to 360

you already know one is 164 and one is a right angle so

164 + 90 = 254

360 - 254 = 106

Mhanifa please help i will mark brainliest

Answers

Answer:

NO is answer I believe if you rotate the figure such that the similar sides IJ and MN are on top.

Step-by-step explanation:

Suppose a runner travels 5200 feet in 5 minutes. At what rate does she run?

Answers

she a runna she a track star

sorry lol

Answer:

1040 ft./min

Step-by-step explanation:

It's Right :)

Which equation is an identity

Answers

It’s c , because blah blah blah blah blah blah blah and identity is same
It’s c u had this question
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