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3 years ago

A number m plus 4 is greater than or equal to 7

Mathematics

1 answer:

otez555 [7]3 years ago

3 0

$m + 4 \geqslant 7 \\ m \geqslant 3$

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Which linear inequality is represented by the graph?

vovangra [49]

Answer:

y > 3x+2

Step-by-step explanation:

We have 2 points so we can find the slope

m = (y2-y1)/(x2-x1)

= (2--7)/(0--3)

= (2+7)/(0+3)

= 9/3

= 3

The y intercept is 2, so we can write the equation of the line using the slope intercept form (y=mx+b)

y = 3x+2

The line is dotted so we use either < or > (If it were solid we would use ≤ or ≥)

Since it is shaded above , y is greater than.

y > 3x+2

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3 years ago

Merik had 24 hole muffins she gave 1/6 of them to her friends how many does she have left

Alenkinab [10]

She would have 20 muffins. 1/6 of 24 is 4, so subtract 4 from 24.
24-4=20.

8 0

3 years ago

Read 2 more answers

Solve for b; 5ba - x = y

saul85 [17]

Answer and Step-by-step explanation:

First, add x to both sides.

5ba = x + y

Now, divide both sides by 5a.

$b = \frac{x+ y}{5a}$ is the answer.

#teamtrees #PAW (Plant And Water)

3 0

3 years ago

Rectangles JKLM and STUV are similar. The width of JKLM Is 30 feet and the perimeter is 140 feet. The length of STUV is 8 yards.

algol13

Rectangle JKLM:
p = 140 ft
w = 30ft
l = (140 - 2(30))/2 = 40ft
A = (30)(40) = 1200 ft²

Rectangle STUV:
l = 8yd = (8)(3) = 24 ft

24ft/40ft = 3/5

so . .

w = 3/5*30 = 18ft
A = 3/5*1200 = 720 ft²

Ratio of area JKLM:STUV = 1200/720 = 5/3

5 0

3 years ago

In a rural area, only about 30% of the wells that are drilled find adequate water at a depth of 100 feet or less. A local man cl

Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

Given that in a rural area, only about 30% of the wells that are drilled find adequate water at a depth of 100 feet or less.

The sample size n = 80

no of wells less than 100 feet deep=27

Sample proportion = $\frac{27}{80} =0.3375$

a) Create hypotheses as

$H_0: p = 0.30\\H_a: p >0.30\\$

(Right tailed test)

p difference $= 0.3375-0.30 = 0.0375$

Std error of p = $\sqrt{\frac{0.3(0.7)}{80} } =0.0512$

b) Assumptions: Each trial is independent and np and nq >5

c) Z test can be used.

Z= p diff/std error = $\frac{0.0375}{0.0512} =0.73$

p value = 0.233

d) p value is the probability for which null hypothesis is false.

e) Conclusion: Since p >0.05 we accept null hypothesis

there is no statistical evidence which support the claim that more than 30% are drilled.

3 0

3 years ago