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
Whitepunk [10]
3 years ago
10

X=3 5x+4y=-9 -x+4y-2z=-25

Mathematics
1 answer:
Alexandra [31]3 years ago
5 0

Answer:

y=-6 z=-1

Step-by-step explanation:

5(3)+4y=-9

15+4y=-9

-15. -15

4y=-24

/4. /4

y=-6

-x+4y-2z=-25

-3+4(-6)-2z=-25

-3+-24-2z=-25

-27-2z=-25

+27. +27

-2z=2

/-2. /-2

z=-1

You might be interested in
30 points: 5 star and best answer and thanks. you can leave answers in. A B C or D ty ty ty.
nalin [4]
1, B 2, C 3, C 4, C 5, a 6, b 7, b 8, C 9, a I think. Hoped this helps.
5 0
3 years ago
Read 2 more answers
Let c be parametrized by x = et sin (10t) and y = et cos (10t) for 0 ≤ t ≤ 2. find the length l of
marysya [2.9K]
C:x(t)=e^t\sin10t;\,y(t)=e^t\cos10t;\,0\le t\le2

\displaystyle\int_0^2\sqrt{x'(t)^2+y'(t)^2}\,\mathrm dt
\displaystyle=\int_0^2\sqrt{(e^t\sin10t+10e^t\cos10t)^2+(e^t\cos10t-10e^t\sin10t)^2}\,\mathrm dt
\displaystyle=\int_0^2e^t\sqrt{\sin^210t+20\sin10t\cos10t+100\cos^210t+\cos^210t-20\sin10t\cos10t+100\sin^210t}\,\mathrm dt
=\displaystyle\int_0^2e^t\sqrt{1+100}\,\mathrm dt
=\displaystyle\sqrt{101}(e^2-1)
7 0
3 years ago
Lane's arm span is 61 inches. If his height is 1⁄4 foot longer than his arm span, how tall is he? feet and inches
melamori03 [73]
If lane's are span is 61 inches. his height is 1/4 foot long than his arm span. his height is <span>5 ft 3 inches </span> 
6 0
3 years ago
Can you please help me with is.
gtnhenbr [62]

<em><u>Option</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>,</u></em><em><u>2</u></em><em><u>5</u></em><em><u>4</u></em><em><u>.</u></em><em><u>3</u></em><em><u>4</u></em>

Answer:

Area =^r²

Area=22/7×9²

=3.14=81

=254.34

7 0
2 years ago
A zipline is constructed over a ravine as shown in the diagram at the right. What is the horizontal distance from the bottom of
Katyanochek1 [597]

Answer: X= 284.04

To solve for x, you must first find the missing angle in the left corner. I will name it "< Y" (Angle Y)

2

Sin50/250 = SinY/60

Set up your problem, then cross multiply.

3

60(Sin50)= 250(Sin Y)

60(Sin50)/250= Sin Y

After cross multiplying, you should be left with this. You then cancel out 250 by dividing it on both sides to get Sin Y by itself.

4

Sin Y = 0.183

Y= Sin-1 x 0.183

This is what it solves out to.

Now you cancel out Sin on both sides, and it should look like the bottom problem.

5

Y= 10.5

This is now your answer to plug into the problem needed to solve for X.

6

Now because you have 2 out of 3 angles, you can solve for the missing angle that lays opposite to x. ( in SOHCAHTOA you need the OPPOSITE and the HYPOTENUSE. The Hypotenuse is originally give, but we had to do extra solving to find the Opposite's degree.)

7

Because degree's in a triangle add to 180, we will add 50 degrees + 10.5 degrees to get 60.5 degrees. Now subtract 60.5 from the full 180 degrees and we get 119.5 degrees as the missing number that lays opposite from X. Now we can solve for X.

8

(Sin 119.5)/x = (Sin 50)/250

Set up your final problem as so and cross multiply.

9

X(Sin 50) = 250(Sin 119.5)

X = 250(Sin119.5)/(Sin50)

After cross multiplying, the problem should look like the one at the top. Cancel out Sin 50 to get X by itself by dividing both sides by Sin 50, then solve for X.

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • A pharmacist weighed 475 mg of a substance on a balance of dubious accuracy. When checked on a balance of high accuracy, the wei
    5·1 answer
  • A coach pays $100.44 for 36 baseballs. What is the cost of each baseball?
    12·2 answers
  • An arena that hosts sporting events and concerts has three sections for 3 levels of seating. For a basketball game seats in Sect
    11·2 answers
  • A number is 5 more than 3 times another number. The sum of the two numbers is 33. As an equation, this is written x + 3x + 5 = 3
    9·2 answers
  • What is the prediction for the outcome when the independent variable is 12?
    5·1 answer
  • Start Time 7:30 end time 9:29 what is the elapesed time
    15·2 answers
  • Which of the following is not the same as 5.63 grams?
    14·1 answer
  • Nick's science test has a section with twelve true-or-false questions. In how many different ways can Nick answer the questions?
    9·1 answer
  • A bag contains 4 orange tiles, 6 red tiles, and 8 black tiles. You select one tile at random from the bag. What is the probabili
    7·2 answers
  • If a regression analysis shows an R factor of 0.15, it is safe to assume a perfect positive relationship between cost and volume
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!