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
marin [14]
4 years ago
14

Solve for x!

Mathematics
2 answers:
spayn [35]4 years ago
7 0

First multiply by 9x. 7 = 378x. Divide each side by 378 to isolate x. 1/54 = x. Check your answer: 7/(1/6) does indeed equal 42.

attashe74 [19]4 years ago
6 0

I'm assuming you meant (7/9)x = 42.

If that's correct, then we can quickly and easily solve for x by multiplying both sides of this equation by 9/7:

(9/7)(7/9)x = (9/7)(42) = 54.      x = 54

You might be interested in
Please help I only have 15 minutes to complete this last one
Natalka [10]

Answer:

the slope of MN= -5-1/3-(-6)=-2/3

two lines are parallel>> slopes are equal

equation of line = (y-y'=m(x-x'))

therefore, y-1= -2/3(x-6)

y-1 = -2/3x + 4

y+2/3x=5

6 0
3 years ago
Prove this (sinx-tanx)(cosx-cotx)=(sinx-1)(cosx-1)
Ilya [14]

<span><span>(<span>sinx</span>−<span>tanx</span>)</span><span>(<span>cosx</span>−<span>cotx</span>)</span></span>

<span>=<span>(<span>sinx</span>−<span><span>sinx</span><span>cosx</span></span>)</span><span>(<span>cosx</span>−<span><span>cosx</span><span>sinx</span></span>)</span></span>

<span>=<span>sinx</span><span>(1−<span>1<span>cosx</span></span>)</span><span>cosx</span><span>(1−<span>1<span>sinx</span></span>)</span></span>

<span>=<span>sinx</span><span>(<span><span>cosx</span><span>cosx</span></span>−<span>1<span>cosx</span></span>)</span><span>cosx</span><span>(<span><span>sinx</span><span>sinx</span></span>−<span>1<span>sinx</span></span>)</span></span>

<span>=<span><span>sinx</span><span>cosx</span></span><span>(<span>cosx</span>−1)</span><span><span>cosx</span><span>sinx</span></span><span>(<span>sinx</span>−1)</span></span>

<span>=<span>(<span>cosx</span>−1)</span><span>(<span>sinx</span>−1<span>)</span></span></span>

6 0
3 years ago
Read 2 more answers
Find the value of x.<br> x= 2.<br> x= 3<br> x= 33<br> x= 52
pshichka [43]

Answer: x=2

57+x=25x

subtract x from both sides

57+x-x=25x-x

57=24x

divide by 24 on both sides

57÷24=24x÷24

x=2.375

I hope this is good enough:

6 0
3 years ago
Read 2 more answers
The estimate regression equation for a model involving two independent variables and 10 observations follows.
True [87]

Answer:

a) b_1 = 0.5906\\b_2 = 0.4980

b) y = 289.815

Step-by-step explanation:

We are given the following information:

The estimate regression equation for a model involving two independent variables and 10 observations follows:

y = 29.1270 + 0.5906x_1 + 0.4980x_2

where x_1, x_2 are the two independent variable and y is the dependent variable.

a) The regression line is of the form:

y = b_0 + b_1x_1 + b_2x_2\\\text{where } b_0 \text{ is the y-intercept and }b_1, b_2\text{ are the coefficients of} x_1, x_2\text{ respectively}

Comparing, we get,

b_1 = 0.5906\\b_2 = 0.4980

These are the coefficients of x_1, x_2 respectively, and helps us to know the the significance of the independent variable in predicting the independent variable.

b) We have to estimate y when

x_1 = 180 \text{ and } x_2 = 310\\y = 29.1270 + 0.5906x_1 + 0.4980x_2\\\text{Putting values}\\y = 29.1270 + 0.5906(180) + 0.4980(320)\\y = 289.815

6 0
4 years ago
To measure the speed of the jet stream, a weather plane left its base at noon and flew 800 km directly against the stream with a
Mama L [17]

Answer:

I’m not sure but I got this question asked before

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Someone help pleasee!
    8·1 answer
  • When you give change to a customer, always choose the least number of bills and coins. You need to return a customer $19.98 in c
    13·1 answer
  • Can you guys please help me
    10·1 answer
  • Solve this equation by substitution y=3x-4
    5·1 answer
  • I really need help with this!!!!!!! 2x=26 2x=26
    15·2 answers
  • Three students are working to find the solution set of this system of equations:
    10·2 answers
  • Hi guys help please you will get 20 points i rlly need help
    8·2 answers
  • A rectangular box with a square base and no top is to have a volume of 108
    11·1 answer
  • If f(x) = 3x3 + 5x2 + x - 1,<br> what would be the<br> P/Q list of possible rational roots?
    6·1 answer
  • 19. In a "TriboNcci" sequence, each number after the third number is the sum of the preceding three numbers. For example, if the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!