All categories

3 years ago

Find the missing coordinates y+7x=1 (-1, ) (4, )

Mathematics

1 answer:

Pachacha [2.7K]3 years ago

6 0

Answer:

(-1,8)

(4,-27)

Step-by-step explanation:

y+7x=1

Let x = -1 and find y

y+7(-1)=1

y -7 =1

Add 7 to each side

y-7+7 = 1+7

y = 8

(-1,8)

Let x = 4 and find y

y+7(4)=1

y +28 =1

Subtract 28 from each side

y+28-28 = 1-28

y = -27

(4,-27)

You might be interested in

ILL MARK BRAINLIEST PLZ HELP ME

MissTica

Answer:

b and d

Step-by-step explanation:

parallel means go in the exact same direction and if they never ended, they would never touch

7 0

3 years ago

the junior class has 50 students. twenty-five students take french, 15 take latin, and 10 take both. if a student is chosen at r

ivann1987 [24]

P(F) = 0.5
P(L) = 0.3
$P(F\cap L)=0.2$
$P(F\cap L')=0.5-0.2=0.3$
$P(F'\cap L)=0.3-0.2=0.1$
$P(F'\cap L')=1-0.3-0.2-0.1=0.4$

3 0

3 years ago

What number is 20%of 40

satela [25.4K]

Answer:

20% of the number 40 is 8

7 0

3 years ago

Read 2 more answers

Write863.141 In expanded form

skad [1K]

Answer:

800+60+3+0.1+0.04+0.001

6 0

4 years ago

The function T(n) is defined below. Which of the following are equal to T(8)? Check all that apply.

Firdavs [7]

You are told to choose the choices equal to T(8). T(8) means that you need to find the possible ways to write the y-value when n = 8, since 8 is being substituted in for "n."

1) First, plug in n = 8 into the equation you're given, <span>T(n) = 4n - 5:
T(8) = 4(8) - 5
T(8) = 32 - 5
T(8) = 27

That is answer choice C, making choice C correct. You can eliminate choice B, since 27 </span>≠ 37.

2) Check answer choice A. Is T(5) + T(3) = 27? T(5) means you need to plug in 5 for n. T(3) means you need to plug in 3 for n.
T(5) + T(3)
= [4(5) - 5] + [4(3) - 5]
= [20-5] + [12-5]
= 15 + 7
= 22

Since 22 ≠ 27, you can eliminate choice A.

3) Check answer choice D. Is T(7) + 4 = 27? T(7) means you need to plug in 7 for n.
T(7) + 4
= [<span>4(7) - 5] + 4
</span>= [28 - 5] + 4
= 23 + 4
= 27

Since 27 = 27, answer choice D is also correct!

--------

Answer: Choice C (27) and Choice D (T(7) + 4)

4 0

3 years ago