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
vichka [17]
3 years ago
8

How can i do this one ☝️

Mathematics
2 answers:
Dvinal [7]3 years ago
7 0

Answer:

<h2><u>20</u></h2>

Step-by-step explanation:

-4 = \frac{r}{20} - 5

⇒ -4 + 5 = \frac{r}{20}

⇒ 1 = \frac{r}{20}

⇒ 1 × 20 = r

⇒ <u>20</u> = r

storchak [24]3 years ago
6 0

Hey there!

Let's start by adding 5 to both sides. This eliminates the -5.  

1 = r/20

Now to solve for r we can multiply both sides by 20.

20 = r

Check

-4 = 20/20 - 5

-4 = 1 - 5

-4 = -4

Your answer is r = 20.

Hope this helps!

You might be interested in
A researcher decides to set the significance level to 0.10. If the null hypothesis is true, what is the probability of a Type I
MakcuM [25]

Answer:

the probability of a Type I error is 0.10

Step-by-step explanation:

  Given the data in the question;

significance level ∝ = 0.10

Null H₀ hypothesis is true;

the probability of a Type I error = ?

we know that; a type 1 error is the error of rejecting a Null hypothesis when in reality, it is true. That is false positive.

Hence, our type 1 error will be;

P(rejecting null | null true ) = significance level ∝ = 0.10

Therefore, the probability of a Type I error is 0.10

3 0
3 years ago
I need help it's geometry
nekit [7.7K]

Step-by-step explanation:

\sin(45)  =  \frac{x}{5}  \\   \frac{1}{ \sqrt{2} } =  \frac{x}{5}    \\ x =  \frac{5}{ \sqrt{2} }  = 3.535

\sin(45)  =  \frac{y}{5}  \\ y =  \frac{5}{ \sqrt{2} }  = 3.535

3 0
3 years ago
Read 2 more answers
Krystal wants to buy a hat that costs $29.
SSSSS [86.1K]

Answer:

$71.00

Step-by-step explanation:

100

-29 = 71.00

4 0
3 years ago
Translate the expression: 3 times the difference between 7 and<br> g is 90
Tcecarenko [31]

Answer:

3(7-g)=90

You multiply the expression by 3. The difference means to subtract two values. The whole equation equals 90.

4 0
3 years ago
If you flipped the graph of y = x2 + 2x - 2 vertically, you would get the graph of y = -(x2 + 2x - 2). true or false
lyudmila [28]
Hi friend,
If you flipped the graph y=x^2+2x-2 vertically, you would get the graph y=-(x^2+2x-2) TRUE. 
Hope this helps you!
7 0
4 years ago
Read 2 more answers
Other questions:
  • There are four boxes of 100 sheets of paper and some single sheets of paper in the closet choose all the numbers that show how m
    10·1 answer
  • There is a 25% chance that a canal will flood during any given year. What is the experimental probability that the canal will fl
    10·1 answer
  • Evaluate the expression 2m + n for m = 10 and n = 8.
    14·1 answer
  • Lilihoops1010 is asking for help! Go help them!
    6·1 answer
  • Bob got 84% of her test questions on her test correct. If there were 25 questions on the test how many did he get correct
    15·2 answers
  • Evaluate -2=y+5 and solve the variable
    9·2 answers
  • I need help with this??
    14·1 answer
  • What is the midpoint of the line segment that joins (6-2) and (,5)
    7·1 answer
  • Both questions 7 and 8
    12·1 answer
  • What is the equation of a line whose slope is -2 and whose y-intercept is 4?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!