I need help with this

look at picture

Complementary angles

Answer:

Step-by-step explanation:

I think 65 divided by 625 is 104 phones jill sold srry if I’m wrongI’m just a kid trying to figure out all this work

Answer:

[tex]H_1 : \mu > 24.5[/tex]

Step-by-step explanation:

From the given information:

The sample size is 28

The population mean is 24.5 (ppb)

The sample mean is 225.3 (ppb)

Thus, the null and the alternative hypothesis can be computed as:

Null hypothesis:

[tex]H_o : \mu \le 24.5[/tex]

Alternative hypothesis:

[tex]H_1 : \mu > 24.5[/tex]

The alternative hypothesis addresses their concern which is Hₐ: μ > 24.5. Then the correct option is D.

In null hypotheses, there is no relationship between the two phenomenons under the assumption or it is not associated with the group. And in alternative hypotheses, there is a relationship between the two chosen unknowns.

Perchlorate is a chemical used in rocket fuel.

People who live near a former rocket-testing site are concerned that perchlorate is present in unsafe amounts in their drinking water.

Drinking water is considered safe when the average level of perchlorate is 24.5 parts per billion (ppb) or less.

A random sample of 28 water sources in this area produces a mean perchlorate measure of 25.3 ppb.

The null hypotheses and alternative hypotheses can be given as

Null hypotheses

H₀: μ ≤ 24.5

Alternative hypotheses

Hₐ: μ > 24.5

More about the null hypotheses and alternative hypotheses link is given below.

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Answer:

11/8

Step-by-step explanation:

[tex]slope = \frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]

20 - 9 = 11

12 - 4 = 8

slope = 11/8

Answer:

undefined

Step-by-step explanation:

Answer:

The correct answer is 10 and 11.

Answer:

16 Gallons

Step-by-step explanation:

x = 25% gallon amount

.25 x   +  .12 (10)   =     .20 (10+x)

.05x = .8

x = 16 gal of 25%

The number of gallons of acid solution that should be added to 10 gallons of a 12% acid solution to obtain a 20% acid solution is 16.

An assertion that two mathematical expressions have equal values is known as an equation. An equation simply states that two things are equal. The equal to sign, or "=," is used to indicate it.

Given:

The percentage of acid in gallon solution = 25%,

The percentage of acid in 10 gallons = 12%

Suppose there are x total gallons,

Write the equation as shown below,

25% of (x - 10) + 12% of 10 = 20% of x

0.25 × (x - 10) + 0.12 × 10 = 0.2x

0.25x - 2.5 + 1.2 = 0.2x

0.25x - 0.2x = 2.5 - 1.2

x = 1.3 / 0.05

x = 26

Thus, the number of gallons of 25% acid solution = 26 - 10 = 16.

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Answer:

d

Step-by-step explanation:

Answer:

I belive that the answer is D because there is 2 items and if u count the different colors by 1 it would be 6

Answer:

√64

Step-by-step explanation:

In mathematics, an expression involving the root (√) sign is regarded as a radical.

64^(1/2)

This is the same as;

√64

- √(1/2&64) This option is wrong.

- √64 This option is correct

- 1/2 √64  This option is wrong.

- 8 This option is wrong.

Answer:

Step-by-step explanation:

You cannot tell from the wiggly line! If that is supposed to be a straight line, you have equivalent ratios from point to point.

Answer:

There is not enough information to solve the problem.

Step-by-step explanation:

The question only gives the information that two angles are summing up to 68 degrees, but doesn't state what angles. As such, we can't determine any angles formed by parallel lines a and b, and transversal m.

Answer:

area of circle=πr²=π50²=2500πunit²

Answer:

324 centimeters³

Step-by-step explanation:

The base is square so the length and width are both 6. The height is 9. The formula to solve a rectangular prism's volume is length x width x height. In this case it's 6 x 6 x 9. This is 324.

Hope it helps!

Answer:

a)   10(5g + 2r)   weight loss over time

b)   20/12 = 1.66667 = 50 / 1.67 = 29.999 gm = 5(6g -1/50)  or  5(5 + g) = 30g

c) 30g = 12 days = 3/5   therefore 5/5 -3/5 = 2/5  = 2/5 x 50 (g) = 20g in 8 days lost

8/20 = 0.4  loss each day 50g - 0.8g = 20-2 = 18 days.

Step-by-step explanation:

Answer:

B and E

Step-by-step explanation:

✔️The triangle given has 3 unequal angles and 3 unequal side lengths. A scalene triangle has unequal angles and side lengths. Therefore, the triangle above is a scalene triangle.

✔️Each of the 3 angles of the triangle is less than 90°. An acute triangle has each of its 3 interior angles measuring less than 90°. Therefore the given triangle above is an acute triangle.

Answer:

[tex] \huge \boxed{ \tt i)1.6} \\ \huge \boxed{ \tt ii)4.3} \\ \huge \boxed{ \tt iii)8.3} \\ \huge \boxed{ \: \: \: \: \tt iv)9.2 \: \: \: }[/tex]

Step-by-step explanation:

tips for finding square root by division method

tips for converting decimal to a fraction

solve the square roots using division method:

solve the square roots by converting decimals into fraction:

[tex] \tt i) \sqrt{2.56} \\ \tt \sqrt{ \frac{256}{100} } \\ \tt \sqrt{ \frac{1 {6}^{2} }{ {10}^{2} } } \\ \tt\frac{16}{10} \\ \tt \: 1.6[/tex]

[tex] \tt ii) \sqrt{18.49} \\ \tt \sqrt{ \frac{1849}{100} } \\ \tt\sqrt{ \frac{ {43}^{2} }{ {10}^{2} } } \\ \tt \frac{43}{10} \\ \tt 4.3[/tex]

[tex] \tt iii) \sqrt{ 68.89} \\ \tt \sqrt{ \frac{6889}{100} } \\ \tt \sqrt{ \frac{ {83}^{2} }{ {10}^{2} } } \\ \tt \frac{83}{10} \\ \tt 8.3[/tex]

[tex] \tt iv) \sqrt{84.64} \\ \tt\sqrt{ \frac{8464}{100} } \\ \tt\sqrt{ \frac{ {92}^{2} }{ {10}^{2} } } \\ \tt \frac{92}{10} \\ \tt9.2[/tex]

Answer:

1.6

4.3

8.3

9.2

Step-by-step explanation:

Hope it is helpful....

Answer:

x = 8

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define

3(x - 2) + 8 = 2(x + 5)

Step 2: Solve for x

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Here we see that 26 does indeed equal 26.

∴ x = 8 is the solution to the equation.

Answer:

1) 65.1

2) 3.4

Step-by-step explanation:

sorry I can't explain well but those are the answers

Answer:

Step-by-step explanation:

area of rectangle = 8×5 = 40 cm²

area of semicircle = ½×π4² = 8π cm²

total area = 40 + 8π ≅ 65.1 cm²

:::::

area of circle = π2² = 4π in²

area of square = 4⁴ = 16 in²

blue area = 16 - 4π ≅ 3.4 in²

Answer:

x means

Step-by-step explanation:

10x means that the x is something you would times to get the number you want which is 44 so 10 times x=4. hope this helped :)

Answer:

15

Step-by-step explanation:

2(8x - 23) = 10x + 44

16x - 46 = 10x + 44

6x = 90

x = 15

Answer:

false

Step-by-step explanation:

`Slope = [tex]\frac{rise}{run}[/tex] = [tex]\frac{-2}{1}[/tex]. So, it is false.

Answer:

False

Step-by-step explanation:

Slope = Change in y/ Change in x

=(1-3)/(2-1)

=-2

Answer:36x-11

Step-by-step explanation:

Answer: 36x-11

34x-7+2(x-2)

34x-7+2x-4

36x-11

Step-by-step explanation:

Answer:

In costs $17.19

Step-by-step explanation:

Answer:

1/6

Step-by-step explanation:

M&M comes in 6 colors.

So, P(green), = 1/6

P(red) = 1/6

· P(Yellow) = 1/6

· P(Orange) = 1/6

Answer:

$100

Step-by-step explanation:

We are given that

Company sells shirts=100-0.5x

Charge per shirt=x

We have to find the  charge per shirt in order to make $5000 on shirt sales.

According to question

[tex]x(100-0.5x)=5000[/tex]

[tex]100x-0.5x^2=5000[/tex]

[tex]0.5x^2-100x+5000=0[/tex]

[tex]5x^2-1000x+50000=0[/tex]

[tex]x^2-200x+10000=0[/tex]

[tex]x^2-2\times x\times 100+(100)^2=0[/tex]

[tex](x-100)^2=0[/tex]

[tex]x=100,100[/tex]

Hence, charge per shirt=$100

Answer:

2 minutes

Step-by-step explanation:

The front of the train enters the tunnel and travels 1 km before the rear of the train enters the tunnel.  Thus, the total distance traveled by the front of the train is 2 km, and this is covered in a certain number of hours:

Since distance = rate times time, time = distance / rate.  In this particular case we have:

                                              2 km

time = distance / rate = ------------------- = (1/30) hr

                                           60 km/hr

(1/30) hr converts to 2 minutes, since 1 hr = 60 minutes

Answer:

g

Step-by-step explanation:

Answer:

2.6 in

Step-by-step explanation:

From the question given above, the following data were obtained:

Volume (V) of cylinder = 258¾ in³

Height (h) of cylinder = 12 in

Radius (r) =.?

NOTE: Pi (π) = 3.14

The radius of the cylinder can be obtained as follow:

V = πr²h

258¾ = 3.14 × r² × 12

258.75 = 37.68 × r²

Divide both side by 37.68

r² = 258.75 / 37.68

Take the square root of both side

r = √(258.75 / 37.68)

r = 2.6 in

Therefore, the radius of the cylinder is 2.6 in.

The possible value of k such that √50 and √k can be written as a single term is; 50

Since √50 and √k are equal as described in the question;

√50 = √k.

The question requests that we determine What is the possible value of k such that √50 and √k can be written as a single term.

The possible value of k is therefore; 50.

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