pls answer soon, i needa halp

Answer:

26.67

Step-by-step explanation:

Answer: 16

Step-by-step explanation:

I need one more brainliest for next rank I’d appreciate it

Answer:

16 cups milk is the answer

Answer:

1

Step-by-step explanation:

a it is 1 because

can u see perpedicular symbol

Answer:

1 line.

A perpendicular line is a line that meets another line and forms a 90° angle.

If you look at the diagram, only the middle line forms a 90° angle when it meets line AB

Answer:

(a) 5:13

(b) 5:8

Step-by-step explanation:

There are 13 books in all.

8 books are new.

13 - 8 = 5 books are used.

Ratio of used books to all books: 5 used books : 13 books in total.

Ratio of used books to new books: 5 used books : 8 new books.

~

Answer

A=  [tex]\frac{5}{13}[/tex]  Or 5:13

B= [tex]\frac{5}{8}[/tex] or 5:8

Step-by-step explanation:

the question asked for you to show the ratio for the number of used books compared to the total number on the shelf. Since it tells us that 8 of the 13 books are new that would mean that the other 5 books that are on the shelf with the 8 new ones would be used. Then you just put it in a ratio, which if im remembering correctly from when i learned this it just looks like a fraction basically. Same goes for the second question except you are just putting the number of used books to the number of new books in ratio form. Hope this helps and also if you  need help learning ratios i gotchu covered :)

Given:

m∠EAC = 120° and m∠HBI = 84°.

To find:

The measure of ∠BCA.

Solution:

If two lines intersect each other then the vertically opposite angles are equal.

[tex]\angle HBI \cong \angle ABC[/tex]             (Vertically opposite angles)

[tex]m\angle HBI = m\angle ABC[/tex]    

[tex]84^\circ = m\angle ABC[/tex]              ...(i)

If two angles forms a linear pair, then  their sum is 180 degrees.

[tex]m\angle BAC+m\angle EAC=180^\circ[/tex]                 (Linear pair)

[tex]m\angle BAC+120^\circ=180^\circ[/tex]

[tex]m\angle BAC=180^\circ-120^\circ[/tex]

[tex]m\angle BAC=60^\circ[/tex]              ...(ii)

According to the angle sum property, the sum of all interior angles of a triangle is 180 degrees.

[tex]m\angle ABC+m\angle BAC+m\angle BCA=180^\circ[/tex]                 (Angle sum property)

[tex]84^\circ+60^\circ+m\angle BCA=180^\circ[/tex]          [Using (i) and (ii)]

[tex]144^\circ+m\angle BCA=180^\circ[/tex]

[tex]m\angle BCA=180^\circ-144^\circ[/tex]

[tex]m\angle BCA=36^\circ[/tex]

Therefore, the correct option is C.

Answer:

11

Step-by-step explanation:

because they empty 6 bags and there are 5 bags left to that is 11 all together

The total number of bags of leaves b is given by the equation b = 11 bags

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the total number of bags be = b

The number of bags emptied by Cora's brother = 6 bags

The number of bags left with Cora = 5 bags

So , the equation will be

The total number of bags b = number of bags emptied by Cora's brother + number of bags left with Cora

Substituting the values in the equation , we get

The total number of bags b = 6 + 5

The total number of bags b = 11 bags

Therefore , the value of A is 11 bags

Hence , the number of bags of leaves is 11 bags

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ2

Answer:

230

Step-by-step explanation:

a = 510(0.93)^t

a = 510(0.93)^11

a = 229.5528082951

Rounded

a ≈ 230

Answer:

94

Step-by-step explanation:

Answer:

The answer is 94.

Step-by-step explanation:

The answer is positive because a negative divided by a negative equals a positive.  

Answer:

Step-by-step explanation:

Perpendicular means opposite reciprocal as far as the slope goes. The thing we need to know without prompting is that the given slope of x = -2 is a perfectly vertical line with an undefined slope, and that a line perpendicular to this one would have to be a perfectly horizontal line. Slopes of perfectly horizontal lines is always 0. Therefore, filling in the point-slope form of a line using the slope of 0 and the given point:

y - 6 = 0(x -(-5)) and

y - 6 = 0(x + 5) and

y - 6 = 0x + 0 so

y - 6 = 0 and

y = 6.

Answer:

Step-by-step explanation:

incomplete question.

Algebra

The inverse of -9n is dividing by -9.

[tex]n = - 5[/tex]

Answer:

n=−5

Step-by-step explanation:

what we have −9n=45

we divide -9 on both sides:

−9n/-9 =45/-9

n=−5

Hope this is right!

Answer:

Counterexample

Step-by-step explanation:

Counterexample ensures that you are stating your point or opinion and you firmly oppose their general opinion.

Answer:

3mg per BID vistrail

Step-by-step explanation:

Let's see what we can fill in here.

<ACE = 130

180 - 50 = 130

Now that we have two sides and an included angle, we can use the Law of Cosines.

Law of Cosines: c^2 = a^2 + b^2 - 2ab(cos(C))

Let's plug in what we know and solve!

c^2 = 40^2 + 38^2 - 2(40)(38)(cos(130))

R = 70.69706

Hope this helps!! :)

Answer:

R =70.6970629

Step-by-step explanation:

We need to use the law of cosines since we have 2 sides and the included angle

The angle inside is 180 -50 = 130

c^2 = a^2 + b^2 − 2ab cos(C)  where c is the side opposite the unknown angle

R^2 = 40^2 + 38^2 - 2*40 *38 cos (130)

R^2 = 1600 -1444-3040cos 130

R^2 = 3044-3040cos130

R^2 =4998.074333

Taking the square root of each side

sqrt(R^2) = sqrt( 4998.074333)

R =70.6970629

Answer:

the results of the sale is profit

Answer:

900 centimetres

Step-by-step explanation:

9x100=900

Answer:

90 pages

Step-by-step explanation:

30% complete

70% to go = 63 pages

t = total number of pages

0.7t = 63

∴ t = ⁶³/₀.₇

⁶³/₀.₇ = 90

См. картинку во вложении, ответ отмечен красным цветом.

Answer:

They travelled the same distance and they spent the same amount of time from the 225 marker to 230 marker.

Step-by-step explanation:

Given

See attachment for graph

Required

The relationship between distance and time travelled by Kevin and Carrie

The straight line represents Kevin's journey while the curve represents Carrie's

From the graph, we can see that the straight line and the curve both start at the origin (0,0) and they both end at the same point (17,5)

Point (17, 5) represents the 230 marker (i.e. 225 + 5 - 230)

Since the line and the curve meet at this point, then they travelled the same distance and they spent the same amount of time.

Answer:

0.5185 kg are needed to make 2 kg of cat food

Step-by-step explanation:

Chicken bones and chicken pieces in the ratio 20:7

This means that [tex]\frac{20}{20 + 7} = \frac{20}{27}[/tex] of the total weight is of bones and [tex]\frac{7}{27}[/tex] is of pieces.

What weight of chicken pieces is needed to make 2 kg of cat food?

7/27 of 2kg. So

(7/27)*2 = 14/27 = 0.5185 kg

0.5185 kg are needed to make 2 kg of cat food

Answer:

there is 15[tex]e^{ \frac{-t}{100}[/tex] amount of salt in the tank after t minute.

Step-by-step explanation:

Given the data in the question;

tank contains 1000L of brine with 20kg of dissolved salt, Pure water enters the tank at a rate of 15L/min.

How much salt is in the tank after t minutes.

Now,

let x represent the amount of salt after t minutes,

so

x(0) = 15

dx/dt = rate in - rate out

Now, since the water entering is pure, the rate in is 0

rate out will be; x/1000 × 10 kg

∴

dx/dt = -x/100

[tex]\frac{1}{x}[/tex]dx = -[tex]\frac{1}{100}[/tex]dt

∫[tex]\frac{1}{x}[/tex]dx =  -[tex]\frac{1}{100}[/tex]∫1dt + c

lnx =  -[tex]\frac{t}{100}[/tex] + c

Now since x(0) = 15

ln15 = c

lnx =  -[tex]\frac{t}{100}[/tex] + ln15

x = [tex]e^{ \frac{-t}{100} + ln15[/tex]

x = 15[tex]e^{ \frac{-t}{100}[/tex]

Therefore, there is 15[tex]e^{ \frac{-t}{100}[/tex] amount of salt in the tank after t minute.

Answer:

lỗi text rồi. ko đọc dc :))

Answer:

Area = 105.6 square cm

Step-by-step explanation:

[tex]Area \ of \ circle = \pi r^2\\Area \ of \ semi-circle = \frac{1}{2} \pi r^2 = \frac{1}{2} \times 3.142 \times 8.2^2 = 105.6cm^2[/tex]

Answer:

25

Step-by-step explanation:

Answer:

-64

Step-by-step explanation:

Answer:

12 PENCILS

Step-by-step explanation:

1.50 / 2 = .75

9.00/0.75 = 12

=========================================

Explanation:

The perimeter around the circle, aka circumference, is found through this formula

C = 2*pi*r

That's for a full circle. However, we're dealing with semicircles here, so we cut that in half to get pi*r to represent the curved distance around half the circle.

For the outer larger semicircle, that curved distance is exactly 14pi

For the inner smaller semicircle, that curved distance is 7pi, since 7 is half of 14.

The total curved portions is 14pi+7pi = 21pi

Then we add on the last straight line portion that's 14 cm long to get a total perimeter of 21pi+14

This is the exact perimeter in terms of pi.

The last thing to do is replace pi with 3.14 and simplify

21pi+14 = 21*3.14+14 = 79.94

This value rounds to 80

Answer:

a) 84th percentile.

b) The 25th percentile is of 67 inches.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The heights of the men age 18 and over in HANES5 averaged 69 inches; the SD was 3 inches.

This means that [tex]\mu = 69, \sigma = 3[/tex]

Such a man that is 6 feet tall is at the percentile of this height distribution.

6 feet = 6*12 inches = 72 inches. So this percentile is the p-value of Z when X = 72. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{72 - 69}{3}[/tex]

[tex]Z = 1[/tex]

[tex]Z = 1[/tex] has a p-value of 0.84, so 84th percentile.

What is the 25th percentile, to the nearest inch

X when Z has a p-value of 0.25, so X when Z = -0.675.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]-0.675 = \frac{X - 69}{3}[/tex]

[tex]X - 69 = -0.675*3[/tex]

[tex]X = 67[/tex]

The 25th percentile is of 67 inches.