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
DanielleElmas [232]
3 years ago
15

In 16 years, Marissa will be five times older than she is today. How old is she?

Mathematics
1 answer:
mario62 [17]3 years ago
3 0

Answer:

4

Step-by-step explanation:

1 5

2 10

3 15

4 20

i wrote it out

x+16=5x

16=4x

4=x

You might be interested in
Find the measures of the angles of the triangle whose vertices are A = (-3,0) , B = (1,3) , and C = (1,-3).A.) The measure of ∠A
alekssr [168]

Answer:

\theta_{CAB}=128.316

\theta_{ABC}=25.842

\theta_{BCA}=25.842

Step-by-step explanation:

A = (-3,0) , B = (1,3) , and C = (1,-3)

We're going to use the distance formula to find the length of the sides:

r= \sqrt{(x_1-x_2)^2+(y_1-y_2)^2+(z_1-z_2)^2}

AB= \sqrt{(-3-1)^2+(0-3)^2}=5

BC= \sqrt{(1-1)^2+(3-(-3))^2}=9

CA= \sqrt{(1-(-3))^2+(-3-0)^2}=5

we can use the cosine law to find the angle:

it is to be noted that:

the angle CAB is opposite to the BC.

the angle ABC is opposite to the AC.

the angle BCA is opposite to the AB.

to find the CAB, we'll use:

BC^2 = AB^2+CA^2-(AB)(CA)\cos{\theta_{CAB}}

\dfrac{BC^2-(AB^2+CA^2)}{-2(AB)(CA)} =\cos{\theta_{CAB}}

\cos{\theta_{CAB}}=\dfrac{9^2-(5^2+5^2)}{-2(5)(5)}

\theta_{CAB}=\arccos{-\dfrac{0.62}}

\theta_{CAB}=128.316

Although we can use the same cosine law to find the other angles. but we can use sine law now too since we have one angle!

To find the angle ABC

\dfrac{\sin{\theta_{ABC}}}{AC}=\dfrac{\sin{CAB}}{BC}

\sin{\theta_{ABC}}=AC\left(\dfrac{\sin{CAB}}{BC}\right)

\sin{\theta_{ABC}}=5\left(\dfrac{\sin{128.316}}{9}\right)

\theta_{ABC}=\arcsin{0.4359}\right)

\theta_{ABC}=25.842

finally, we've seen that the triangle has two equal sides, AB = CA, this is an isosceles triangle. hence the angles ABC and BCA would also be the same.

\theta_{BCA}=25.842

this can also be checked using the fact the sum of all angles inside a triangle is 180

\theta_{ABC}+\theta_{BCA}+\theta_{CAB}=180

25.842+128.316+25.842

180

6 0
3 years ago
Read 2 more answers
I need help what is (6x9)+(7+3)=
Inessa05 [86]

Answer:

64

Step-by-step explanation:

Evaluate the parenthesis before doing the addition, that is

(6 × 9) + (7 + 3)

= 54 + 10

= 64

3 0
2 years ago
Given A is between Y and Z YA = 5.5, AZ = 2x, and YZ = 41.5 =, find AZ
morpeh [17]
YZ = YA + AZ
41.5 = 5.5 + AZ
AZ = 41.5 - 5.5
AZ = 36

So, your final answer is AZ = 36

Hope this helps!
4 0
3 years ago
Read 2 more answers
Given O below, If AB and BC are congruent, what is the measure of chord BC?
zhuklara [117]
Since, AB and BC are the same length, the measure of the chord for BC would be 12.5 units
3 0
3 years ago
Read 2 more answers
The low temperatures for 5 days was 5, -2, -11 ,0 and-3.What was the average low temperature for those days
Daniel [21]
Data:
Average (A): ?
Arithmetic mean (A.M) = 5, -2, -11, 0, -3sum of n numbers = 5

Solving:
A = \frac{AM}{n} = \frac{5+(-2)+(-11)+0+(-3)}{5} = \frac{5-2-11-3}{5} = \frac{\diagup\!\!\!\!3-11-\diagup\!\!\!\!3}{5} = \frac{-11}{5} = - 2.2

Answer:

<span>The average low temperature of these days is -2.2</span>

3 0
3 years ago
Other questions:
  • What is 1687 divided by 4
    7·2 answers
  • Are they right??? <br><br> Due tomorrow
    6·1 answer
  • The following examples illustrate the associative property of multiplication.
    8·2 answers
  • Find the solution to the equations.<br> 3x - y = -4<br> X + y = 0
    10·2 answers
  • Solve each system using substitution: 7x-2y=1 2y=x-1
    7·1 answer
  • Not sure about this please help!!!
    14·1 answer
  • I need help with the last question pls and thank you
    7·1 answer
  • -29 19/40 as a decimal
    7·1 answer
  • Keith has $500 in a savings account at the beginning of the summer. He wants to have at least $200 at the end
    12·1 answer
  • If an airplane passes directly over your head at an altitude of 12 kilometers, how far is the airplane from your position after
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!