1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
krek1111 [17]
3 years ago
13

What does -3x + 7 + -6x t 9 equal

Mathematics
1 answer:
liberstina [14]3 years ago
8 0

Answer:

-50x

Step-by-step explanation:

-6x times 9 which is -54x

-54x-3x = -57x

-54x+7

You might be interested in
Show that there do not exist scalar c1 c2 and c3 c1(-2,9,6)+c2(-3,2,1)+c3(1,7,5)= (0,5,4)​
fredd [130]

This is the same as showing the following system of equations doesn't have a solution:

\begin{cases}-2c_1-3c_2+c_3 = 0 \\ 9c_1 + 2c_2 + 7c_3 = 5 \\ 6c_1 + c_2 + 5c_3 = 4\end{cases}

or in matrix form,

\begin{bmatrix}-2&9&6\\-3&2&1\\1&7&5\end{bmatrix}\begin{bmatrix}c_1\\c_2\\c_3\end{bmatrix} = \begin{bmatrix}0\\5\\4\end{bmatrix}

The quickest way to check if there is a solution is to check whether the coefficient matrix is invertible. If its determinant is 0, then it is not invertible.

And the quickest way to show that the determinant is 0 is by observing that the third row is a linear combination of the first two rows:

(-2, 9, 6) - (-3, 2, 1) = (-2 + 3, 9 - 2, 6 - 1) = (1, 7, 5)

So there are indeed no such scalars <em>c₁</em>, <em>c₂</em>, and <em>c₃</em>.

5 0
2 years ago
Christopher is 20 years younger than Ishaaan. Ishaan and Christopher first met two years ago. Fourteen years ago, Ishaan was 3 t
andrey2020 [161]

Answer:

Christopher is 24 years old now

Step-by-step explanation:

I honestly don't know how I got my answer but I know it's correct

7 0
3 years ago
Which of the following segment is a diameter of O
exis [7]

Answer:

D

Step-by-step explanation:

rule: Diametre includes the centre of a circle.

According to the given conditions AB and DE are diameters.

4 0
3 years ago
Read 2 more answers
Please help me, I’m<br> Dumb
vova2212 [387]

Answer: OPTION C

Step-by-step explanation:

To solve the exercise shown in the image attached, you need to subtract the functions f(x) and g(x).

Keeping the above on mind, you have:

(f-g)(x)=2x^{2}+2-(x^{2}-1)

You must distribute the negative sign and then you must add the like terms, therefore, you obtain:

(f-g)(x)=2x^{2}+2-x^{2}+1\\(f-g)(x)=x^{2} +3

4 0
2 years ago
Read 2 more answers
Find the missing side of the missing side.<br><br> The length of the missing side is: ?m
WARRIOR [948]
Your answer is 76m.

a^2+b^2=c^2

57^2+b^2=95^2

3249+b^2=9025

b^2=5776

Take sqr on both sides and you get:

b=76m
3 0
3 years ago
Other questions:
  • What is 12 percent of 32
    13·2 answers
  • Please show me how to do this!!
    12·1 answer
  • Suppose that 7 cards are drawn from a? well-shuffled deck of 52 cards. What is the probability that all 7 are heartshearts?
    12·1 answer
  • Help me PleAse :)
    13·1 answer
  • 3 schools are participating in a donut fundraiser and shipments have been delivered each pallet has 10 cartons East curtain has
    8·1 answer
  • I love U help me plz❤️
    13·1 answer
  • 10. Jim has only $100 to purchase balloons, hats, and cupcakes for a
    10·1 answer
  • What is the volume of this prism? ​
    14·1 answer
  • 1. Hitung dan gambarlah penyelesaian dari
    8·1 answer
  • Which choice is the correct graph of [x1 &lt; 5?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!