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
solong [7]
3 years ago
6

I need question a and b done pls help

Mathematics
2 answers:
FrozenT [24]3 years ago
8 0

Answer:

A. 5

B. 12

Step-by-step explanation:

What you do is you substitute -2 into the a and the 3 into the b.

a. 3(-2)^2-5(3)+8                       b. 2/3(3)-5(-2)

3(4)-15+8                                   2-(-10)

12-15+8                                      12 is your answer.

-3+8

5 is your answer.

CaHeK987 [17]3 years ago
4 0

For (a)

3a^2 - 5b + 8

Let a be -2 and b be 3.

3(-2)^2 - 5(3) + 8

3(4) - 15 + 8

12 - 15 + 8

-3 + 8

Answer: 5

For (b)

Let a be -2

Let b be 3

(2/3)b - 5a

(2/3)(3) - 5(-2)

2 + 10

Answer: 12

Did you follow?

You might be interested in
Lines x and y are parallel and are cut by the transversal b. If the measure of angle 1 is 57°, what is the measure of angle 6? E
lana [24]

Answer:

\angle6=123

Step-by-step explanation:

Given

Lines x and y

Transversal b

\angle 1 = 57

Required

Find \angle 6

From the attachment, \angle1 and \angle7 are vertically opposite.

This means that

\angle 1 =\angle 7 = 57

Similarly

\angle 7  and \angle 6 are supplementary angles

So:

\angle7 + \angle6=180

Make \angle6 the subject

\angle6=180-\angle7

\angle6=180-57

\angle6=123

The relationship between \angle1 and \angle6 is that they are supplementary angles because:

\angle6+ \angle1=180

4 0
3 years ago
There are 7 socks in a bag. 2 of those socks are blue.
Romashka [77]

Answer:

2/7 or about 28% depending on what type of answer your teacher is looking for

3 0
2 years ago
Please help!!! MAX POINTS I CAN DO i put it in math because i trust the math people more
valkas [14]

Answer:

The 1st Blank is: A pure substance, or simply a substance

The 2nd blank on the left is: Elements

The 3rd blank on the right is: Compounds

The 4th blank which is the second middle one is: A mixture

The 5th blank which is the bottom left one is: Heterogeneous mixture

The 6th blank which is the last one on the bottom right is: Homogeneous mixture

Look at the step-by-step explanation if you get confused at the bottom.


Step-by-step explanation:

The 1st Blank: I would just put a pure substance.

The 2nd blank on the left: They are three characteristics of elements but just put elements.

The 3rd blank on the right: They are three characteristics of compounds but just put compounds.

The 4th blank which is the second middle one is: The characteristics of a mixture but just put a mixture.

The 5th blank which is the bottom left one: Are the characteristics of a heterogeneous mixture but just put heterogeneous mixture.

The 6th blank which is the last one on the bottom right: Are the characteristics of a homogeneous mixture but just put homogeneous mixture.


3 0
3 years ago
Read 2 more answers
Can someone please help me with 7-
Helga [31]

Answer:

The answer is the second one , 0=5 , no solutions .

Step-by-step explanation:

Good luck

5 0
3 years ago
Find the mean of the following: 158, 213, 107, 213, and 213. If needed, round your answer to the nearest tenth
Shalnov [3]

Answer:

180.8

Step-by-step explanation:

1. Add all the numbers

2. Divide the sum by 5

3. you get the answer

4 0
3 years ago
Read 2 more answers
Other questions:
  • Mrs. Huynh bought a bag of 3 dozen toy animals as party favors for her son’s birthday party. The bag of toy animals cost $28.97.
    13·2 answers
  • The price of a ticket was increase from 50p to 60p. What is the increase a as a fraction in its simple form? As a percentage of
    13·2 answers
  • 6 millimeters equal feet
    9·1 answer
  • What are the coordinates of point B in the diagram?
    15·2 answers
  • Triangle XYZ is rotated 90° clockwise about the origin. On a coordinate plane, triangle X Y Z has points (negative 3, 1), (4, 4)
    14·2 answers
  • Muu
    12·1 answer
  • If x+2=3 what is x please help
    10·1 answer
  • NEED ANSWER ASAP ! ! ! ! ! !
    14·2 answers
  • There are 8.54 grams of sugar in 7 servings of strawberries. How many grams of sugar are in a single serving of strawberries?
    10·1 answer
  • Write a formula for the shaded regions help!<br> How would I answer this?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!