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
vovikov84 [41]
3 years ago
14

#14 this is sixth grade math using algebraic expressions

Mathematics
1 answer:
maw [93]3 years ago
8 0

what are the questions?

You might be interested in
Sandra's scores on the first 4 tests were 87%, 92%, 76%,and 89%. What is the minimum score she needs to make on the fifth test s
sergejj [24]

Answer:

Sandra need to score at least <u>56%</u> in her fifth test so that her average is 80%.

Step-by-step explanation:

Given:

First 4 test scores = 87%, 92%, 76%,89%

Average targeted = 80%

We need to find the minimum score she needs to make on fifth test to achieve average of at least 80%.

Solution:

Let the minimum score she needs to make in fifth test be 'x'.

Total number of test = 5

Now we know that;

Average is equal to sum of all the scores in the test divided by number of test.

framing in equation form we get;

\frac{87+92+76+89+x}{5}=80

Multiplying both side by 5 we get;

\frac{344+x}{5}\times 5=80\times 5\\\\344+x=400

Subtracting both side by 344 we get;

344+x-344=400-344\\\\x=56\%

Hence Sandra need to score at least <u>56%</u> in her fifth test so that her average is 80%.

5 0
3 years ago
Solve the inequality 4t^2 ≤ 9t-2 please show steps and interval notation. thank you!​
FromTheMoon [43]

Answer: t\in [\dfrac{1}{4},2]

Step-by-step explanation:

Given

Inequality is 4t^2\leq9t-2

Taking variables one side

\Rightarrow 4t^2-9t+2\leq0\\\Rightarrow 4t^2-8t-t+2\leq0\\\Rightarrow 4t(t-2)-1(t-2)\leq0\\\Rightarrow (4t-1)(t-2)\leq0

Using wavy curve method

t\in [\dfrac{1}{4},2]

3 0
2 years ago
27 miles per hour. how many miles per minute in decimal form?
maxonik [38]

1 hour = 60 minutes

27/60 = 0.45 miles per minute

7 0
3 years ago
Can someone help me with this
horsena [70]
Number 5 would be D i think

7 0
3 years ago
Slope is known as the run over the rise. True or False
pashok25 [27]

Answer:

false. slope is calculated by rise over run

8 0
3 years ago
Read 2 more answers
Other questions:
  • I really need help tyy
    5·1 answer
  • Dingane has $8.00, and exactly 30% of that money is from 5-cent coins. How many 5-cents coins does Dingane have?
    10·1 answer
  • Jonathan has been on a diet since January 2013. So far, he has been losing weight at a steady rate. Based on monthly weigh-ins,
    5·1 answer
  • 30 points
    13·1 answer
  • F(x) = -3x + 3, then<br> f-1(x) =
    6·1 answer
  • The hypotenuse of a right triangle is 4 feet
    5·1 answer
  • What is the value of h?<br> 0.8h = 1.12
    13·1 answer
  • Express 384kg in tones​
    6·1 answer
  • Which of the following is an example of simple harmonic motion?
    12·1 answer
  • Gemoetry <br> PLEASE HELP!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!