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
Morgarella [4.7K]
3 years ago
12

2. Kelsea needs a test average of at least 90 to get an "A-" this marking period in math. Her three test grades

Mathematics
1 answer:
Luda [366]3 years ago
6 0

Answer:

<u>Equation:  87 + 91 + 86 + x = 360</u>

<u>Solution: 264 + x = 360</u>

<u>x = 360 - 264</u>

<u>x = 96</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

First three Kelsea's test grades : 87, 91 and 86

2. What score must she get on her fourth test to receive at least an A- ?

Define variable:  x that represents the grade needed by Kelsea on her fourth test to receive at least an A-

Equation:  87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

<u>Now you can understand if the previous work you did is correct</u>

You might be interested in
Is 56 ft, 65 ft, 16 ft a right triangle
Debora [2.8K]
No, it isn't a right triangle.
7 0
3 years ago
Read 2 more answers
Can anyone help me with this plz
inn [45]

Answer:

B.

Step-by-step explanation:

So we know right off the bat the angles ABE and CBD are congruent because of vertical angles.

Now we can look at the sides.

The ratio for 27:18 = 3:2

The ratio for 36:24 = 3:2

They check out.

That means that the answer is B. SAS

5 0
3 years ago
4w^2+4w+1=25<br> NEED HELP PLEASEEE
geniusboy [140]

Answer:

w=2, -3

Step-by-step explanation:

minus 25 from each side

1+-25+4w^2+4w=25+-25

combine like terms

-24+4w^2+4w=0

factor out the greatest Common factor

4(-6+w+w^2)=0

factor a trinomial

4((-3+-1w)(2+-1w))=0

I hope this helps!

6 0
3 years ago
For which value of x is the equation 6 = 12x true?
skad [1K]

Answer:

x = 0.5

Step-by-step explanation:

5 0
3 years ago
Katrina buys a 42-ft roll of fencing to make a rectangular play area for her dogs.
vekshin1

Answer:

(a) l = -w + 21

(b) Domain: 0 <em>(See attachment for graph)</em>

(c) f(w) = -w + 21

Step-by-step explanation:

Given

2(l + w) = 42

l = length

w = width

Solving (a): A function; l in terms of w

All we need to do is make l the subject in 2(l + w) = 42

Divide through by 2

l + w = 21

Subtract w from both sides

l + w - w = 21 - w

l  = 21 - w

Reorder

l = -w + 21

Solving (b): The graph

In (a), we have:

l = -w + 21

Since l and w are the dimensions of the fence, they can't be less than 1

So, the domain of the function can be 0

--------------------------------------------------------------------------------------------------

To check this

When w = 1

l = -1 + 21

l = 20

(w,l) = (1,20)

When w = 20

l = -20 + 21

l = 1

(w,l)= (20,1)

--------------------------------------------------------------------------------------------------

<em>See attachment for graph</em>

<em></em>

Solving (c): Write l as a function f(w)

In (a), we have:

l = -w + 21

Writing l as a function, we have:

l = f(w)

Substitute f(w) for l in l = -w + 21

l = -w + 21 becomes

f(w) = -w + 21

5 0
3 years ago
Other questions:
  • Please help!! Which of the following could represent the scale factor of the smaller figure to the larger figure?
    12·2 answers
  • Please help me if so thank you
    15·1 answer
  • 1. What is (f+g)(x)?
    11·2 answers
  • What does 5 + (-1) = ?
    9·2 answers
  • For the equations given below, which statement is true? -2x=14. 6x=-42​
    11·1 answer
  • Use the given information to find the minimum sample size required to estimate an unknown population mean mu. How many students
    11·1 answer
  • PLEAAASE HELP ILL MARK BRAINLIEST
    12·2 answers
  • Name the form of the equation, then find the y-intercept of the following lines.....<br> y=2/5x+1
    14·2 answers
  • HELPPPP DUE SOOON ILL GIVE BRAINLESS PLS HELPPP
    8·1 answer
  • What are the steps to solve (5xy^3)^2(xy)^4?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!