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zzz [600]
2 years ago
13

7x - 4 ≤ 6 solving inequalities

Mathematics
2 answers:
exis [7]2 years ago
7 0

first thing group the like terms

Step-by-step explanation:

you have to take negative four and group it with six, when negative four is taken to the other side it's no longer negative it's positive 4 it changes a sign because it's on the other side, therefore it will be 6+4=10 and then you have to divide both sides by 7 for instance 7×÷7 is equal to and<10 ÷7

therefore x is equal and < 10/7

Jlenok [28]2 years ago
7 0

Answer

x <= 10/7

Step-by-step explanation:

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The answer to the question is that the surface area is 48
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3 years ago
In 4 years, Harry’s age will be the same as Jim’s age is now. In 2 years, Jim will be twice as old as Harry will be. Find their
ololo11 [35]
Jim is 6 / Harry is 2 

In 4 years Harry will be 6 
In 2 years Jim will be 8 and Harry will be 4 which is twice as much Harry's age.


hope this helps!
5 0
3 years ago
Read 2 more answers
Can you help me plzz due in a lil bit
Andre45 [30]

Answer:

A

Step-by-step explanation:

4 ----- 2/3

15 ----- ????

multiply 15 by 2/3 and divide the result by 4 and you will get the answer.

4 0
3 years ago
Tennis elbow is thought to be aggravated by the impact experienced when hitting the ball. The article "Forces on the Hand in the
Gnoma [55]

Answer:

Step-by-step explanation:

Hello!

The objective is to study whether there is a greater force after impacting on one- handed backhand drive in advanced tennis players than in intermediate tennis players.

Sample 1: Advanced tennis players

X₁: Force (N) on the hand just after impact on a one- handed backhand drive for an advanced tennis player.

n₁= 6

X[bar]₁= 40.29 N

S₁= 11.29

Sample 2: Intermediate players

X₂: Force (N) on the hand just after impact on a one- handed backhand drive for an intermediate tennis player.

n₂= 8

X[bar]₂= 21.40

S₂= 8.30

Assuming that both variables have a normal distribution and both population variances are equal, to compare these two populations is best to do so trough their population means using a t-test for independent samples.

If the force is greater for the advanced players than for the intermediate players, then you'd expect the population mean for the advanced players to be greater than the population mean for the intermediate players:

H₀: μ₁ ≤ μ₂

H₁: μ₁ > μ₂

α: 0.05

t= \frac{(X_[bar]_1-X[bar]_2)-(Mu_1-Mu_2)}{Sa\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } } ~~t_{n_1+n_2-2}

Sa= \sqrt{\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2} } = \sqrt{\frac{5*127.51+7*68.92}{6+8-2} }= 9.66

t_{H_0}= \frac{(40.29-21.40)-0}{9.66\sqrt{\frac{1}{6} +\frac{1}{8} } } = 3.62

Using the p-value approach, the decision rule is

If p-value ≤ α, reject the null hypothesis

If p-value > α, do not reject the null hypothesis

The p-value for this test is 0.00024, it is less than the level of significance, so the decision is to reject the null hypothesis.

This means that at a 5% significance level you can conclude that the average force experienced on the hand after a one-handed backhand drive for advanced players is greater than the average force experienced on the hand after a one-handed backhand drive for intermediate players.

I hope this helps!

3 0
3 years ago
What is 13.984 rounded to the nearest tenth
eimsori [14]
13.984 rounded to the nearest tenth is 14

.984 is closer to 1 than to .9, so we have to round up.
7 0
3 years ago
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