All categories

3 years ago

Find the solution of this system of equations.

Mathematics

2 answers:

Ratling [72]3 years ago

8 0

Answer:

(-3,-8)

x= -3, y= -8

Step-by-step explanation:

Alex73 [517]3 years ago

3 0

Answer:

(-3,-8)

Step-by-step explanation:

x-y=5 this converts to x=5+y and use this to plug-in the second equation

5+y-4y=29

5-3y=29

-3y=24

y=-8

then plug in your y back to the equation used for x,

x=5-8

x=-3

(-3,-8)

You might be interested in

4 teammates shAre 5 granola bars equally draw to show how much each person gets shade the amount that one person gets

Artyom0805 [142]

Each person would get 1/5 beacuse you would have to divide 5 into 4.

3 0

3 years ago

Use the first three triominoes to find the missing number in the fourth triomino.

Marat540 [252]

Answer:

The answer is 24

Step-by-step explanation:

The given triomino follows as sequence that,

The upper no. × The right no. -The left no. = The middle no

As we can see this by analyzing the three triominoes

first triominoes

4 × 2 - 4 =4

second triominoes

6×1 - 5 = 1

third triominoes

3×4 -0 = 12

∵ Finding fourth triominoes

9×3 - 3 = 24

 ∴ The answer is 24

8 0

3 years ago

In a recent study of statistics students, a random sample of students were asked to provide the number of hours per week they sp

Airida [17]

Answer:

$ME=\frac{Upper-Lower}{2}= \frac{8.15-6.55}{2}= 0.80$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

For this case the confidence interval is given by (6.55,8.15). And we can estimate the margin of error with this formula since the confidence interval is symmetrical:

$ME=\frac{Upper-Lower}{2}= \frac{8.15-6.55}{2}= 0.80$

3 0

3 years ago

General idea of how to do this

Anastaziya [24]

The general approach to this is to write the (x, y) coordinates of the trajectory's peak in terms of the sine and cosine of the launch angle α. Then use a trig identity (sin(2α)² + cos(2α)² = 1) to eliminate the dependence on α.

You should get
t = v₀sin(α)/g
x = v₀²sin(2α)/(2g)
y = v₀²(1-cos(2α))/(4g)

Solve each of the latter two equations for the trig function, then substitute those expressions into the trig identity above. Divide by the coefficient of x² and rearrange to get the expression shown.

3 0

3 years ago

Alec pours the same amount of soup into 3 bowls. He used 4 cups of soup. How much soup is in each bowl?

Mrac [35]

1 3/4 cups of soup per bowl

4 0

4 years ago

Read 2 more answers