answer this for brainliest

Answer:

30% of 2,000 = 600 calories.

Step-by-step explanation:

Answer:

x= 6  x= -2

Step-by-step explanation:

x^2-4x-12=0

What 2 numbers multiply to -12 and add to -4

-6*2 = -12

-6+2 = -4

(x-6)(x+2) = 0

Using the zero product property

x-6 =0  x+2 =0

x= 6  x= -2

Answer:

a=2, b=4, c=3

d=2, e=3

Step-by-step explanation:

[tex]\frac{1}{2} :\frac{3}{4} = \frac{1}{2} *\frac{4}{3} =\frac{1}{a} *\frac{b}{c} \\\\\frac{1}{2} *\frac{4}{3} =\frac{2}{3} =\frac{d}{e}[/tex]

a=2, b=4, c=3

d=2, e=3

Answer: a=2, b=4, c=3

d=2, e=3

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let x be a random variable representing the number of the members of a men’s club that wear black vests to their club meetings. This is a binomial distribution since the outcomes are two ways. It is either they wear black or red. The probability of success, p = 70/100 = 0.7

The probability of failure, q would be 1 - p = 1 - 0.7 = 0.3

a) Number of samples, n = 10

We want to determine P(x ≤ 8)

From the binomial distribution calculator,

P(x ≤ 8) = 0.851

Answer:

The probability that at least 8 of the vest worn will be black is 0.75490

Step-by-step explanation:

The parameters given are;

The percentage of black vest worn = 70%, p₀ = 0.7

Number of men in sample, n = 10

Required  number of men who wore black = 8

Proportion of sample [tex]\hat p[/tex] = 8/10 = 0.8

The z score of a proportion is given by the relation;

[tex]z = \dfrac{\hat p - p_0}{\sqrt{\dfrac{p_0(1 - p_0)}{n} } }[/tex]

Plugging in the vales, we have;

[tex]z = \dfrac{0.8 - 0.7}{\sqrt{\dfrac{0.7(1 - 0.7)}{10} } } = 0.69[/tex]

From the z table we have probability = p(z < 0.69) = 0.75490

The probability that at least 8 of the vest worn will be black = 0.75490.

3 1/2 yards

Step-by-step explanation:

She needs 4 2/3 or 14/3 yards

She has 3/4 of that. / of is a sign of multiplication

3/4 of 14/3

3/4 * 14/3

42/12. Simplify

14 / 4. So she has 14/4 or 3 1/2 yards

Answer:

the slope would be -5

Step-by-step explanation:

in linear equations, the slope of the line is the coefficient of x

so in this case, it is -5

Answer:

(-3,3)

Step-by-step explanation:

just took the test on edg.

Answer:(–3, 3)

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Given

4x² = 64 ( divide both sides by 4 )

x² = 16 ( take the square root of both sides )

x = ± [tex]\sqrt{16}[/tex] = ± 4

Solutions are x = - 4 and x = 4 → C

Step-by-step explanation:

f(4) = -4 -4

= -8

......

.......

Answer:

A. 4p=80

Step-by-step explanation:

Total Cost of 4 tickets=$80

Price=p

Quantity=4

Total cost=price×quantity

80=p×4

80=4p

80=4p is the equation that can be used to determine price

From the equation

80=4p

Divide both sides by 4

80/4=4p/4

20=p

Price is $20 per ticket

Answer:

4p = 80

Step-by-step explanation:

Total cost before tax = $80

Number of tickets purchased = 4

Price 'p' of each ticket

p = total price of ticket / number of tickets purchased

p = 80 / 4

Multiplying both sides by 4

4p = 80

Hey there!

Answer:

CD = 3.

Step-by-step explanation:

Since the triangles are similar, we can set up a ratio to determine the other side-lengths:

[tex]\frac{12-x}{18} =\frac{x}{6}[/tex]

Cross multiply:

[tex]6(12-x) = 18x[/tex]

Distribute the '6':

[tex]72-6x = 18x[/tex]

Combine like terms and simplify:

[tex]72 = 24x[/tex]

[tex]x = 3[/tex]

Therefore, the length of CD is 3.

Answer: we can make 15,504 different math tests

Step-by-step explanation:

Ok, we have a bank with 20 questions (Q1, Q2........ , Q20)

and we want to make a test with 15 of those 20 questions.

As the order of the questions does not matter in the thest ( is the same if the order is Q1, Q2, ...., Q15 than if the order is Q15, Q14, ....., Q1 )

So we only want the number of combinations.

When we have N elements and we want to create groups of K elements, the total number of combinations is:

[tex]C = \frac{N!}{(N - K)!*K!}[/tex]

Here N = 20 and K = 15

[tex]C = \frac{20!}{5!*15!} = \frac{20*19*18*17*16}{5*4*3*2*1} = 15,504[/tex]

So we can make 15,504 different math tests

Answer:

It takes the printer 20 minutes to print a banner

Step-by-step explanation:

Notice that there are two unknowns in this problem: the time to print a poster and the time to print a banner. Let's assign the letter "b" to the time it takes to print a banner, and "p' the time it takes to print a poster.

So we can write the following two equations involving the total amount of time that takes to print in the two cases:

[tex]b+p=30\\b+3p=50[/tex]

We can solve for the unknown "p" by subtracting term by term in the equation set above:

[tex]b+3p=50\\b+p=30\\\\b-b+3p-p=50-30\\2p=20\\p=10[/tex]

So it takes 10 minutes to print each poster, we can find the time it takes to print the banner by using the value we just found in one of the equations:

[tex]b+p=30\\b+10=30\\b=20[/tex]

So, it takes 20 minutes to print a banner.

Answer:

I think that the answer would be, 0.813

Step-by-step explanation:

5.8736

7.349

equals 0.812845

If you round it you get 0.813

Answer:  2: an equation in the form y = mx + b

1. An x/y table may have two entries with the same x; not a function in that case.

2.  That's a line with a slope; for each x there's a single y, definitely a function

3.  Ordered pairs -- like the table, the same x with different ys is possible, which wouldn't be a function.

4. List of numbers  -- a list isn't a function, at least not without more context

Answer:

25 sin 42 =x

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opposite/ hypotenuse

sin 42 = x / 25

Multiply each side by 25

25 sin 42 = x/25 *25

25 sin 42 =x

Answer:

A

Step-by-step explanation:

Answer:

21 litres

Step-by-step explanation:

1 litre = 1000 cubic cm

The rectangular tank is 50 cm long, 20 cm wide, and 33 cm high.

The tank is in the shape of a rectangular prism.

The volume of a rectangular prism is:

V = l * w * h

where l = length

w = width

h = height

Therefor, its volume is:

V = 50 * 20 * 33 = 33000 cubic cm = 33 litres

The tank is filled to a depth of 12 cm.

The volume of water in the tank is:

V = 50 * 20 * 12 = 12000 cubic cm = 12 litres

Therefore, the number of litres left to fill the tank is:

33 - 12 = 21 litres

The liters of water needed to fill the tank is 21 liters.

The first step is to determine the volume of the tank. The tank has the shape of a cuboid. Thus, the formula for the volume of a cuboid would be used to determine the volume of the tank.

Volume of the tank = length x width x height

50 x 20 x 33 = 33,000

1 liter = 1000 cm

33,000 / 1000 = 33

The tank is already filled with 12 liters of water.

Water needed = 33 - 12 = 21 liters

To learn more about volume of a cuboid, please check: https://brainly.com/question/46030

Answer:

-1

Step-by-step explanation:

Because the nembers before 0 are negitave and the ones after it are positive the equation to find the answer is (-3)(+2) and if you don't know how you add the two like: -3 +2

- negative

+ positive (which also goes for adding 2)

The inequality is shown in that number line 3 ≥ x > 2

In math, a number line can be defined as a straight line with numbers arranged at equal segments or intervals throughout. A number line is typically shown horizontally and can be extended indefinitely in any direction.

In order to express inequalities on a number line, we mark a straight line and indicate the endpoints with either an open circle or a closed circle.

An open circle indicates that it does not include the value.

A closed circle indicates that the value is included.

These numbers solution set consists of all real numbers between -3 and 2.

Since 2 has an open circle, it excludes '2,' but it does include everything higher, up to and including -3, which has a closed circle.

Thus, we can represent this using the inequality 3 ≥ x > 2.

Learn more about the number line here:

brainly.com/question/17617832

#SPJ2

Answer:          1/2

If 2 students are drinking punch

and 2 are drinking lemonade that would mean it would be 2/4

but if you were to simplify by dividing both by 2

it would be 1/2.

Answer:

Length of ribbon = 4 ×  ∛(V)

Step-by-step explanation:

The question is incomplete without the options of the expression to choose from.

Find attached the diagram used in solving the question.

Volume of a cube = side × side × side

Let side = s

Volume of a cube = side³ = s³

Volume of cube box = V

V = s³

s = ∛(V)

The shape of the top of a cube box is a square.

Length of the ribbon to be used to glue round the top of a cube box = Perimeter of a square

Perimeter of a square = length + length + length + length  = 4× length

Length = side

Perimeter of a square = 4×s

Perimeter of a square = 4 ×  ∛(V)

Length of ribbon = 4 ×  ∛(V)

Answer:

x+y= 21

0.10x+0.25y= 4.20

Step-by-step explanation:

You can write a system of equations that model the situation in which one equation would determine the number of coins by adding up all the coins she has and the other one would indicate the total amount Maria has by adding up the results of multiplying the value of each type of coin for the quantity:

x+y= 21

0.10x+0.25y= 4.20

x= amount of dimes

y= amount of quarters

Answer:

120 Tickets

Step-by-step explanation:

Band rues charges $950 to play all night.

DJ phoria charges $350 plus $5 for each ticket sold.

(a)The graph is attached.

From the point of intersection of the two lines, the number of tickets for which the cost of the band and the DJ would be equal is 120 tickets.

(b)

Given the two linear equations

y=950

y=350+5x

Therefore:

950=350+5x

950-350=5x

5x=600

x=120

Therefore, the number of tickets at which the cost of the band and the DJ would be equal is 120, just as obtained above.

The experimental probability is calculated based on the results of the experiment; since the name Ted was chosen 26 times out of 123, the experimental probability is [tex]\boxed{\frac{26}{123}}.[/tex]

Typically, the theoretical probability assumes that events are chosen randomly; since the name Ted is one of the 6 in the hat, the theoretical probability is [tex]\boxed{\frac{1}{6}}.[/tex]

If we increased the number of names in the hat, we would expect both the experimental and theoretical probability to decrease, since there are now more names to choose from. Similarly, if we decreased the number of names in the hat, the experimental and theoretical probability would increase.

Answer:

y = 15

Step-by-step explanation:

It's given in this question that y varies directly with x.

That means, y ∝ x

⇒ y = kx (where k is the proportionality constant)

If  y = 18 when x = 6,

⇒ 18 = 6k

⇒  k = 3

Therefore, relation between x and y is,

y = 3x

From this relation, if x = 5

y = 3×5

y = 15

Therefore, for x = 15 value of y will be 15.

Answer:

450 portugals

Step-by-step explanation:

in this question, we are tasked with calculating the number of portugals which are picked by the farmer

Firstly, let the number of portugals picked be p and the number of oranges picked be r.

Thus;

p + r = 600 ••••••••••(i)

Secondly there are 3 times as many oranges as there are portugals;

That would be;

3 * r = p

3r = p. •••••••••(ii)

substitute ii into i

3r + r = 600

4r = 600

r = 600/4

r = 150

P = 3r

p = 3 * 150 = 450

Answer:

a) 4.18330013267

b) 7.65643191324

Step-by-step explanation:

Use the calculator to find out the values.

√17.5

=4.18330013267

2.3²+√5.6

5.29+2.36643191324

=7.65643191324

Answer:

a 4.1833

b 7.656

hope its helpful

Answer:

The corresponding sides have the same slope so the answer is QR and MN, SR and PN and MP and QS. Hope this helps!

Answer:

5/2

Step-by-step explanation:

ratio of sides=(√25)/(√4)=5/2