Find the length of x, round too the nearest tenth

Answer:

1/10

Step-by-step explanation:

There are 16+ 14+10 = 40 marbles

P( black) = black/total = 10/40 = 1/4

We put it back

There are 16+ 14+10 = 40 marbles

P( yellow)  = yellow/ total = 16/40 = 2/5

Multiply the probabilities together

P( black, yellow) = 1/4 * 2/5

                           = 2/20 = 1/10

Answer:

solution given:

5.

Cos 42=adjacent/hypotenuse

cos 42=x/32

x=Cos 42*32

x=23.8

6.

sin 26=opposite/hypotenuse

sin26=22/x

x=22/sin26

x=50.19

x=50.2

Answer:

D.

Step-by-step explanation:

The probability the student selected is a girl will be;

⇒ 0.44

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

There are 15 boys and 12 girls in Rosemary’s class.

One of the students is selected at random to be the class monitor.

Now,

Since, There are 15 boys and 12 girls in Rosemary’s class.

Hence, Number of students = 15 + 12

                                            = 27

So, The probability the student selected is a girl = 12 / 27

                                                                             = 0.44

Therefore, The probability the student selected is a girl = 0.44

Learn more about the probability visit:

https://brainly.com/question/13604758

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Answer:

writing an equation or drawing a graph

Step-by-step explanation:

Answer:

Speed in km/hr Time in Minutes

90                       60

45                         120

30                         180

15                      360

10                      540

time Decrease when speed increase

Number of times the speed is increased the number of times time taken is reduced  so it is not possible to take no time at all

as we can see from the graph that it is exponential  , reduction in time keep reducing with increase in speed

Step-by-step explanation:

Answer:

1. 172 cm²

2. 226.56 cm²

3. 336 cm²

4. 284 cm²

Step-by-step explanation:

which one ? all ?

a surface area of an object is always the sum of the individual shapes areas on its surface.

1. 6 rectangles (length×width)

2 rectangles of 2×8 = 16 cm²

32 cm²

2 rectangles of 2×7 = 14 cm²

28 cm²

2 rectangles of 7×8 = 56 cm²

112 cm²

total : 32+28+112 = 172 cm²

2. 2 triangles and 3 rectangles

2 triangles (baseline × height / 2) = 7.2×4.8/2 = 17.28 cm²

34.56 cm²

2 rectangles 10×6 = 60 cm²

120 cm²

1 rectangle 10×7.2 = 72 cm²

72 cm²

total : 34.56+120+72 = 226.56 cm²

3. 2 triangles (right-angled) and 3 rectangles

2 triangles (a×b/2) = 8×6/2 = 24 cm²

48 cm²

1 rectangle 6×12 = 72 cm²

72 cm²

1 rectangle 8×12 = 96 cm²

96 cm²

1 rectangle 10×12 = 120 cm²

120 cm²

total : 48+72+96+120 = 336 cm²

4. 6 rectangles

2 rectangles of 3×10 = 30 cm²

60 cm²

2 rectangles of 3×9 = 27 cm²

54 cm²

2 rectangles of 10×9 = 90 cm²

180 cm²

total : 60+54+180 = 294 cm²

OPTION C AND D

99.8 AND 458 are the values have 3 significant figures

Answer:

The answer to the problem is C

Answer:

The correct answer is B

Step-by-step explanation:

It's because when you're graphing the equation, more than or equal to symbol is a black line, therefore you can cross out A and C. It's B because it's more than 0, D if it was graphed would have the other side shaded, therefore its b

Answer:

41393415 in kg is 1.8776E+07, or about 18775737.2.

Step-by-step explanation:

For this equation, you should divide 41393415 by approximately 2.20462262 to get your answer of 1.8776E+07 or about 18775737.2.

Answer:

A. y = cos(x) - 2

Step-by-step explanation:

The word "sinusoid" means the graph has a shape of the sine function that smoothly goes up and down.

However, the cosine function also has the same shape but the only thing is that it is horizontally translated. Thus, the cosine function is the sinusoid.

Answer:

Step-by-step explanation:

Using the solution diagram below ;

Let height of monument = h

Using trigonometric relation :

Tan θ = Opposite / Adjacent

Tan 47 = h / 32

h = tan 47 * 32

h = 34.315 feets

h = 34.3 feets

Answer:

d. 6-19i

Step-by-step explanation:

(5-8i)+(1-11i)

Step 1: Combine like terms within the parenthesis. There are no like terms within the parenthesis. So, drop the parenthesis and move on to the next step.

(Remember!! If you would have had a negative sign in front of either parenthesis, you would need to distribute out the negative sign).

5 - 8i + 1 - 11i

Step 2: Now add like terms.

5 + 1 - 8i - 11i

6 - 19i

You can't combine any more like terms, so this is your final answer.

6 - 19i

Answer:

The critical value is [tex]Z_{\frac{\alpha}{2}} = 2.96[/tex]

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.997}{2} = 0.0015[/tex]

Now, we have to find z in the Z-table as such z has a p-value of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.0015 = 0.9985[/tex], so Z = 2.96.

The critical value is [tex]Z_{\frac{\alpha}{2}} = 2.96[/tex]

Answer:

you will need to specify a scale and draw the line from which I will solve with simultaneous linear equations

Answer:

50%

Step-by-step explanation:

Let X = Green and red

     Y = Red and blue

     Z = Green and blue

( Buy green or red or blue )

⇒ (x + y) + (y + z) + (z + y)  = 25 + 40 + 25

⇒ 2( x + y + z) = 100

∴ x + y + z = 50

Buy at least one shirt = 50%

So, did not buy any shirt = 100 - 50

                                        = 50%

Answer:

C 14n - 8

Step-by-step explanation:

area of rectangle = length × width = 12n² - 19n - 21

width = 3n - 7

so, what do we need to multiply with width to get the expression of the area ?

4n + 3

(because we think, what do we need to multiply 3n with to get 12n², and what to multiply -7 to get -21)

control : (3n-7)×(4n+3) = 12n²-28n+9n-21 = 12n²-19n-21

perimeter is now 2× length + 2× width

p = 2(3n-7) + 2(4n+3) = 6n - 14 + 8n + 6 = 14n - 8

Answer:

16/ 4 (11-7)

Step-by-step explanation:

The phrase "quotient" tells us that there is division involved. The phrase "times" tells us that there is multiplication involved. The phrase "less" tells us that there is subtraction involved. Using these terminologies and clues, you can basically put together the equation 16/ 4 (11-7).

Answer:

c

Step-by-step explanation:

OK 250 divided by 40 equals 6.25 so she would need 6 bags at least, i would say its your answer but you said its wrong so

Answer:

Solution given:

Annie needs 250 lb of cement to fix the outer step.

Each bag hold 40 lb of cement.

Now

40 lb =1bag

we need

250lb= ? bag.

we have

no of bag =needed lb/1 bag's lb=250/40=250/40=6.25

we do not need more than 7 bags

Annie needs 7 bags.

So

The required inequality is:

b≥7.

Answer:

tough question guy needed more points to answer

Step-by-step explanation:

Answer:

252

Step-by-step explanation:

12*18+6*6

Answer:

about 180 tell me if im wrong

Answer:

image is not clear

Step-by-step explanation:

Answer:

[tex]Area =192\pi[/tex]

Step-by-step explanation:

Given

[tex]\theta = 120^o[/tex]

[tex]r =24[/tex]

Required

The area of the shaded sector

This is calculated as:

[tex]Area =\frac{\theta}{360} * \pi r^2[/tex]

This gives

[tex]Area =\frac{!20}{360} * \pi *24^2[/tex]

[tex]Area =\frac{1}{3} * \pi *576[/tex]

[tex]Area =\pi *192[/tex]

[tex]Area =192\pi[/tex]

Answer:

Step-by-step explanation:

a^2+b^2=c^2

16^2+x^2=20^2

256+x^2=400

x^2=400-256

x^2=144

x=[tex]\sqrt{144[/tex]

x=12

Answer:

y intercepts are (0,3), x intercepts are (0.43, 0)

Step-by-step explanation:

I think that's correct I'm not to sure.

Answer:

-92

Step-by-step explanation:

2x+3-4x-7=180

Answer:

Step-by-step explanation:

Formulas:

C = 24.50d + 15.99

C = 27.50d + 3.99

Options for the question:

a. one mean

b. comparing means from dependent samples

c. comparing means from 2 independent samples

d. one proportion e. comparing proportions from 2 independent samples

f. comparing proportions from dependent samples

Answer:

b. comparing means from dependent samples

Explanation:

The samples are dependent as same individuals are sampled over the months(August and November). Therefore individuals sampled in August will likely show some of the same traits in November. Also we are comparing means since we are working with mean of alcohol consumed for each period and then comparing with another period/months.