if there are 280 beats in 4 seconds, how many seconds are there in 70 beats? please help this is due today!

Answer:

He missed 3 questions (which is a score of 22/25 that equals 88%)

Step-by-step explanation:

This is just what I've taught to judge this by "eye level" how to solve questions like these. In this case, since it's a 25 question test, if you divide 25/100 that means each question was 4 points.

So if 20/25 is 80% and 25/25 is 100%, so the answer is between that range.

Hope it helps.

Answer:

option c is the correct answer

Answer:

no image sry cant haelp

Step-by-step explanation:

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

i think it might be C

Step-by-step explanation:

very sorry if it's wrong

"The number of boys is 45 the number of girls,"

or to say,

"The ratio of the number of boys to the number of girls is 45:1."

This second interpretation reflects the fact that 45 is the unit rate (which is a number) for the ratio 4:5.

Answer:

11.a          2/3rd grams of protein

11.b          2.5 cups

12.           for every gram of protein there is 2.5 cups of cereal

Step-by-step explanation:

Answer:

25.6

Step-by-step explanation:

25.6 / 2 es igual a 12.8

Answer:

4/45

Step-by-step explanation:

The sum of angles in a triangle is 360 degrees

If the angle measures 32 degrees, the fraction can be represent as 32/360

32/360 has to be converted to its simplest form. To this divide both the numerator and the denominator by 8. This gives 4/45

Answer:

This illustrates a right triangle.

Given:

a(height) = 2457 ft.

∠A = 22°23' ; which is the elevation and reflects the a(height)

Find:

b(base)

Solution:

Using the law of cosine, specifically tan∠ = opposite side÷adjacent side

By analysis, tan∠A = a÷b

Since we are finding b, the formula will be derived into:

b = a÷tan∠A

Find b(base):

b = 2457 ft. ÷ tan22°23' ; substituting the numbers

b ≈ 5,966.05 ft. ; Final Answer

Step-by-step explanation:

Answer:

[tex] {x}^{2} + {y}^{2} + 12x - 8y + 4 = 0[/tex]

Answer:

1:x+6  2:y-4   3:36

Step-by-step explanation:

just did it :)

Answer:

[tex]x\geq -6[/tex]

Step-by-step explanation:

The domain of a function is all of the values that [tex]x[/tex] can be under that specific function. In this case, we're asking what values of [tex]x[/tex] allow [tex]\sqrt{\frac{1}{3} x+2}[/tex] to exist.

In order for square roots to exist, the quantity under the square root must be greater than or equal to [tex]0[/tex], because you can't take the square root of a negative number. Therefore, we can write the following inequality to solve for [tex]x[/tex]:

[tex]\frac{1}{3}x+2\geq 0[/tex]

Solving this inequality, we get:

[tex]\frac{1}{3}x+2\geq 0[/tex]

[tex]\frac{1}{3}x\geq -2[/tex] (Subtract [tex]2[/tex] from both sides of the inequality to isolate [tex]x[/tex])

[tex]x\geq -6[/tex] (Multiply both sides of the inequality by [tex]3[/tex] to get rid of [tex]x[/tex]'s coefficient)

Hope this helps!

Answer:

b=18, a=9√3

Step-by-step explanation:

30-60-90 rule

Answer:

4

Step-by-step explanation:

The slope of the line is given. It is 4. Use the equation y=mx+b to answer the other questions.

Substitute 1 in for y, 4 in for m, and 2 in for x and solve for b. The equation would look like 1=4(2)+b.

Solving that equation will give you b=-7

That means the y-intercept is -7.

The equation would then be y=4x-7

Answer:

-40°

Step-by-step explanation:

-13° + -7° = -20°

-20° + -3° = -23°

-23° + 5° = -28°

-28° + -12° = -40°

Answer:

- 13 - 7 + 5 -12

-30/5= -6

Step-by-step explanation:

sum of all observation/total observation

(-13-7+5-12)/5

-30/5

-6

Step-by-step explanation:

[tex](a + {b)}^{2} = {a}^{2} + 2ab + {b}^{2} [/tex]

Answer: 87

Step-by-step explanation:

42 + 51 = 93 then 180 - 93 = 87

Answer:ummmmm

Step-by-step explanation:

t

Answer:What happens when the y-intercept is greater than 1?: more than one y-intercept would violate this, since it would mean that there are two outputs for x=0. Therefore, it is not possible for a function to have more than one y-intercept. This function never crosses the y-axis because, since you can't divide by zero, it is undefined at x=0.

Step-by-step explanation:

9514 1404 393

Answer:

Step-by-step explanation:

Nothing special happens when the y-intercept is above or below the value of 1. The y-intercept is where the function's graph intersects the y-axis.

When the y-intercept is greater than 1, the graph intersects the y-axis above the point (0, 1).

When the y-intercept is less than 1, the graph intersects the y-axis below the point (0, 1).

__

The meaning of the y-intercept will depend on what the graph is modeling. No information about that is provided here.

Answer:

4 m = width of the rectangle.

6 m = length of the rectangle

20 m = perimeter of rectangle

3 m = side of the square

Step-by-step explanation:

Let s = length of side of square

s + 1 = width of rectangle

s + 3 = length of rectangle

Area of rectangle = (s + 1)(s + 3)

Area of square = [tex]s^{2}[/tex]

So,  (s + 1)(s + 3) + [tex]s^{2}[/tex] = 33

[tex]s^{2}[/tex] + 4s + 3 + [tex]s^{2}[/tex] = 33

2[tex]s^{2}[/tex] + 4s - 30 = 0

2([tex]s^{2}[/tex] + 2s - 15) = 0

2(s + 5)(s - 3) = 0

s = -5   or   s = 3

Length of a side cannot be negative, so -5 is ignored

3 m = side of the square

4 m = width of the rectangle

6 m = length of the rectangle

2(4) + 2(6) = 8 + 12 = 20 m = perimeter of rectangle

Answer: B

Step-by-step explanation:

Applying limits, it is found that the end behavior of the graph is:

B. As [tex]x \rightarrow \infty, h(x) \rightarrow -\infty[/tex], and as [tex]x \rightarrow -\infty, h(x) \rightarrow \infty[/tex].

The function is:

[tex]h(x) = -2x^5 + 8x^4 - 2x^2 + 15[/tex]

To find the end behavior, we apply the limits as x goes to infinity, in which just the term with the highest exponent is considered, hence:

[tex]\lim_{x \rightarrow -\infty} h(x) = \lim_{x \rightarrow -\infty} -2x^{5} = -2(-\infty)^5 = -2(-\infty) = \infty[/tex]

Then, as [tex]x \rightarrow -\infty, h(x) \rightarrow \infty[/tex]

[tex]\lim_{x \rightarrow \infty} h(x) = \lim_{x \rightarrow \infty} -2x^{5} = -2(\infty)^5 = -2(\infty) = -\infty[/tex]

Then, as [tex]x \rightarrow \infty, h(x) \rightarrow -\infty[/tex]

Hence, option B is correct.

A similar problem is given at https://brainly.com/question/24248193

Answer:

Step-by-step explanation:

Let the cost of one soft taco = s

Let the cost of one burrito  = b

So  we have this system

3s  + 3b  = 11.25  

4s +  2b   = 10.00   (1)

Divide  the first equation through by 3   and we have that

s +  b  =  3.75         subtract  b from both sides

s   =  3.75 - b   (2)

Sub  (2) into (1)  and we have

4 (3.75 - b)  +  2b  =  10.00      simplify

15 - 4b  + 2b   = 10.00

-2b + 15  =10.00      subtract 15 from both sides

-2b  =  - 5.00         divide both sides by -2

b  = 2.50

And using (2)

s  =  3.75 - 2.50   =   1.50

So...  a soft taco  1.50 and a burrito is  2.50

Answer:

shade 2 triangles

Step-by-step explanation:

2/8 is the same as 1/4.

Answer:

Shade any two pieces

Step-by-step explanation:

2/8 simplified (by cancelling out) is equal to 1/4.

Answer:

2+1.12x=10 minus 2 on each side 1.12x = 8 divide 1.12 to each side is 7.14 miles rounded up on the tenth place

Answer:

-2.8

Step-by-step explanation:

Given that:

Mean, μ = 78

Standard deviation, σ = 5

Omar's score, x = 64

The Zscore of Omar's score :

Zscore = (x - μ) ÷ σ

Zscore = (64 - 78) / 5

Zscore = - 14 / 5

Zscore = - 2.8

Hence, Omar's exam score is - 2.8

Answer:

-2.8 is correct

Step-by-step explanation:

Answer:

2 hours, 15 minutes

B.

Step-by-step explanation:

3:30 to 5:30 is 2 hours elapsed time.

5:30 to 5:45 is 15 minutes elapsed time.

2 hrs + 15 mins =2 hrs 15 mins.

Answer:

2 hours and 15 minutes

Step-by-step explanation:

You subtract 5:45 - 3:30 = 2:15

Hope I helped

Answer: 12:15 pm

Step-by-step explanation:

They had a balloon fight for 1 hour

They played in the hose for 30 minutes

The water fight ended at 1:45 pm minus 1 hour 30 minutes if play = 12:15 pm start time

Answer:

Step-by-step explanation:

2y + 14.6m + 3.8 - 34.8m - 15.6 -2y

-20.2m -11.8

I guess 7 years or 28 months (I think 28 months )