All categories

3 years ago

Solve the following system by graphing.

Mathematics

2 answers:

dmitriy555 [2]3 years ago

7 0

Answer:

Step-by-step explanation:

3 - -1 = 4

3 + -1 = 2

saul85 [17]3 years ago

4 0

Answer:

A. (3,-1)

Step-by-step explanation:

x - y = 4

x + y = 2

2x = 6

x = 3

3 - y = 4

y = -1

Draw two straight lines passing through:

1) (0,-4) and (4,0)

2) (0,2) and (2,0)

You'll see that the two intersect at: (3,-1)

You might be interested in

Keisha is riding her bike on Bayview Bike path. Keisha‘s bike got a flat tire 2/3 of the way down the path, so she had to stop.

Leona [35]

Answer:

$\frac{7}{12}$ miles.

Step-by-step explanation:

Please consider the complete question.

Bay View Bike Path is 7/8 miles. Keisha is riding her bike on Bay View bike path. Keisha's bike got a flat tire 2/3 of the way down the oath and she had to stop. How far did Keisha ride?

To find the distance covered by Keisha while riding the bike, we need to find 2/3 of 7/8 miles.

$\text{Distance that Keisha ride}=\frac{2}{3}\times \frac{7}{8}$

$\text{Distance that Keisha ride}=\frac{1}{3}\times \frac{7}{4}$

$\text{Distance that Keisha ride}=\frac{1\times 7}{3\times 4}$

$\text{Distance that Keisha ride}=\frac{7}{12}$

Therefore, Keisha ride $\frac{7}{12}$ miles.

3 0

2 years ago

Which points are coplanar? A. C,G,A,F B. A,J,K,I C. B,J,K,F D. A,B,H,G

Damm [24]

Answer:

B, J, K, F. Because they are on the same side compared to the other answers.

Step-by-step explanation:

Coplanar points are three or more points which all lie in the same plane. Any set of three points in space is coplanar. A set of four points may be coplanar or may be not coplanar.

Plz mark brainliest!

4 0

2 years ago

A study of 35 golfers showed that their average score on a particular course was 92. The sample standard deviation was 5. We wan

svlad2 [7]

Answer:

$t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$

Step-by-step explanation:

We have a sample of size n = 35, $\bar{x} = 92$ and $s = 5$ . As we want to construct a 95% confidence interval to estimate the value of the true population mean $\mu$ , we should use the pivotal quantity given by $T = \frac{\bar{X}-\mu}{S/\sqrt{n}}$ which comes from the t distribution with n - 1 = 35 - 1 = 34 degrees of freedom. Besides we should use the t-value $t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$ , i.e., regarding the t-distribution with 34 degrees of freedom, we have an area of 0.025 above 2.0322 and below the probability density function. The rationale behind this is that $P(-2.0322\leq T\leq 2.0322) = 0.95$ because of the simmetry of the t distribution.