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
bearhunter [10]
3 years ago
12

If a student has an average exam score between 70 and​ 79, he will earn a grade of C in his algebra course. Suppose he has three

exam scores of 75 ​, ​62, and 85 and that his teacher said the final exam score has twice the weight of the other three exams. What range of scores on the final exam will result in him earning a grade of​ C?
Mathematics
1 answer:
goldenfox [79]3 years ago
7 0

Answer:

(64,86.5)

Step-by-step explanation:

find the case where he gets 70 and the case where he gets 79

if his average is 70:

(75+62+85+2x)/5=70

(222+2x)/5=70

222+2x=350

2x=128

x=64

if his average is 79:

(75+62+85+2x)/5=79

(222+2x)/5=79

222+2x=395

222+2x=395

2x=173

x=86.5

You might be interested in
What’s the answer plss I really need help
iragen [17]

Answer:

The answer is d) 22.4

Step-by-step explanation:

I attached a file below if you want to see the process!

8 0
1 year ago
Read 2 more answers
BRAINLIEST!!
morpeh [17]

well I know for a fact that the equation for a parabola is

ax^{2}  + bx + c

so obviously it is an equation for an ellipse, sadly I am not exactly sure whether the answer is b or c.(I'm leaning towards b)

hopefully I helped out by eliminating 2 options.

Brainliest people comment what the answer is!!!!

Have a great day

6 0
3 years ago
Read 2 more answers
The local music activities coordinator sold 300 tickets to the orchestra concert. Student tickets were $4 and adult tickets were
podryga [215]

Answer:

1200

Step-by-step explanation:

300 x 4=1200

4 0
3 years ago
Write an equation that represents the line (use exact numbers)
scZoUnD [109]

Answer:

y = x + 6

Step-by-step explanation:

Given

The attached graph

Required

Find the equation of the graph

First, we have to get the coordinates of any two points on the graph;

Point 1:

When x = 0; y = 6

Point 2:

When x = -6, y = 0

So, at this stage;we have two coordinates

(x_1,y_1)(x_2,y_2) = (0,6)(-6,0)

Next is to determine the slope of the line using the following formula

m = \frac{y_2 - y_1}{x_2 - x_1}

Substitute (x_1,y_1)(x_2,y_2) = (0,6)(-6,0)

m = \frac{y_2 - y_1}{x_2 - x_1} becomes

m = \frac{0 - 6}{-6 - 0}

m = \frac{- 6}{-6}

m = 1

Next is to determine the equation using slope formula

m = \frac{y - y_1}{x - x_1}\ or\ m = \frac{y - y_2}{x - x_2}

using

m = \frac{y - y_1}{x - x_1}\ where\ m = 1\ x_1 = 0\ and \ y_1 = 6

1 = \frac{y - 6}{x - 0}

1 = \frac{y-6}{x}

Multiply both sides by x

x * 1 = x * \frac{y-6}{x}

x = y - 6

Add 6 to both sides

x + 6 = y - 6 + 6

x + 6 = y

y = x + 6

<em>Hence, the equation of the line is </em>y = x + 6<em></em>

3 0
3 years ago
Find the missing length indicated. Leave your answer in simplest radical form.
Eddi Din [679]

Answer:

<h2>X = 64</h2>

Step-by-step explanation:

<h2>please follow me FRIEND</h2>

7 0
3 years ago
Other questions:
  • What is the value of log9 9?
    12·2 answers
  • I need with this question please. Please help me
    6·1 answer
  • 103 + 21 = _ + 103 please help
    5·2 answers
  • Micha is playing a game with five cards numbered 1 through 5. He will place the cards in a bag and draw one card at random three
    12·1 answer
  • Chandra bowled five games. Her scores were 89, 97, 112, 104, and 113. What is her mean score for the five games?
    6·1 answer
  • The Johnson's bill at the restaurant is $112.00. How much should Mr. Johnson leave as a tip if he plans to tip 15%?
    13·2 answers
  • The area of a garden is 8 3/4 square yards. If the lenght is 1 1/4 yards , what is the length?​
    5·1 answer
  • Help thanks in advance !
    6·1 answer
  • The local park will create a platform made of concrete. Determine the volume of the composite solid.
    10·1 answer
  • C more than 5 as an algebraic expression??????
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!