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
Leona [35]
3 years ago
11

Need help with these questions

Mathematics
1 answer:
Liula [17]3 years ago
4 0

Answer:

Step-by-step explanation:

40+=30

5-0x=1

You might be interested in
Choose the solutions to the quadratic equation x2 – 8x – 9 = 0. –21 –1 9 29
8090 [49]

Answer:

-1 and 9

Step-by-step explanation:

To solve the quadratic, factor and set its factors equal to 0. Factoring is the action of breaking up a polynomial into pieces which multiply to make it. The factors are found by multiplying numbers to make C and add to B of ax^2+bx+c.

Here c = -9 and b = -8. The numbers -9 and 1 multiply to -9 and add to -8. These are the factors (x-9)(x+1).

Set each equal to 0 and solve for x.

x-9 = 0

x = 9

x+1 =0

x = -1

6 0
3 years ago
What is the value of x in the equation one-fifthx – two-thirdsy = 30, when y = 15? 4 8 80 200.
worty [1.4K]

On solving the linear system, for the value of y = 15, the value of x is 200. The correct option is D.

<h3>What is the linear system?</h3>

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Given

The linear equation is shown below.

\rm \dfrac{1}{5}x - \dfrac{2}{3}y = 30

The equation can be written as

\rm 3x - 10y = 450\\

For y = 15, the value of x will be.

\begin{aligned} \rm 3x - 10*15 &= 450\\\\\rm 3x - 150 &= 450 \\\\\rm 3x &= 600\\\\\rm x &= 200\\\end{aligned}

The value of x is 200.

Thus, option D is correct.

More about the linear system link is given below.

brainly.com/question/20379472

7 0
2 years ago
Susan's math teacher assigned x homework problems on Monday. On Tuesday, she assigned 13 more problems. Over the two days, a tot
lana66690 [7]

we can find the answer to this problem by thinking about it logically for a minute:

we know that she assigned "x" homework problems on Monday, so,

x=Monday

we also know that she assigned 13 more problems on Tuesday, so,

13=Tuesday

over the course of the two days she assigned a total of 23 homework problems.

to get the answer of how many problems she assigned on Monday, we have to do the total number of problems she assigned(23) minus the number of problems we know she assigned on Tuesday(13), so,

23-13=10

she assigned 10 problems on Monday.

4 0
3 years ago
How can I use the figure to find the exact value of sin 2theta?
Iteru [2.4K]

Answer:

sin(2θ) = 24/25

Explanation:

In order to find the value of sin 2θ, first, recall the double-angle formula for sine.

\sin 2\theta=2\sin \theta\cos \theta

From the right-triangle:

\begin{gathered} \sin \theta=\frac{\text{Opposite}}{\text{Hypotenuse}}=\frac{3}{5} \\ \cos \theta=\frac{\text{Adjacent}}{\text{Hypotenuse}}=\frac{4}{5} \end{gathered}

Substitute these values into the double-angle formula obtained earlier.

\begin{gathered} \sin 2\theta=2\sin \theta\cos \theta \\ =2\times\frac{3}{5}\times\frac{4}{5} \\ =\frac{24}{25} \end{gathered}

The exact value of sin(2θ) is 24/25.

6 0
1 year ago
Please helppp!! I don't know how to do this
Lera25 [3.4K]

Answer:

it would be (-2,-4)

7 0
3 years ago
Read 2 more answers
Other questions:
  • Select the answer that represents the algebraic translation of the phrase below.
    7·1 answer
  • 14.7x + 4x = 0*(46y+39y) Y=14, Solve for X
    12·1 answer
  • Which rectangle will have the largest area?
    11·1 answer
  • Х
    13·2 answers
  • Which 2 numbers have a least common multiple of 36?
    6·2 answers
  • Simplify the following
    8·1 answer
  • Please..help
    5·1 answer
  • A bag contains 8 blue marbles, 11 green marbles, and 7 red marbles. Which is the probability of drawing a green marble, replacin
    15·2 answers
  • $453 with a sales tax of 6%
    11·2 answers
  • A bag contains 4 red marbles, 6 blue marbles and 2 green marbles. If twc marbles are
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!