Jacob answered 80% of the questions in a test correctly.
He answered 32 of the questions correctly.
Work out the total number of questions in the test.​

Answer:

57

Step-by-step explanation:

If he missed 12 then he hit 45

the total is 57

Answer:

C) 50

Step-by-step explanation:

50

Answer:

C: 50

Step-by-step explanation:

The inner diamond has congruent sides

Half of the line segment on the left is 25.

The other half of the left line segment is also 25

Together, the left line segment is 50 units

The inner diamond has both 90 degree angles and 18 unit long sides

Thus, we know that both sides are congruent

Finally, the right side is the same length as the left side

The right side is 50 units long

We have the following:

When f(x) = -49, then:

x must have a value of -32/3 for f (x) to be equal to -49

Answer:You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: Alvin paddled for 3 hours with a 7 -km/h current to reach a campsite. The return trip against the same current took 10 hours. Find the speed of the boat in still water. Alvin paddled for 3 hours with a 7 -km/h current to reach a campsite.

Step-by-step explanation:

Answer:

\(11\frac{7}{8}\) ounces

Step-by-step explanation:

Since Ethan needs \(2 \frac{3}{8}\) ounces of blue paint to make 1 batch of green paint, we can multiply the amount of blue paint needed by 5 to see how much blue paint he'll need for 5 batches of green paint.

\((2 \frac{3}{8})5 = 10 \frac{15}{8} \rightarrow \boxed{11\frac{7}{8}}\)

This means he will need \(11\frac{7}{8}\) ounces of blue paint to make 5 batches of green paint.

Answer: It will be D

Step-by-step explanation: 5 divided by 8 is 1.2

Answer:

$235.20

Step-by-step explanation:

the tax :

\( \frac{12}{100} \times 210 = 25.20\)

total cost :

$210 + $25.20 = $235.20

Answer:

\(r\leq 84\)

Step-by-step explanation:

Let's write an inequality:

\(7+r\leq 91\\Subtract \ 7 \ from \ both \ sides\\r\leq 84\)

Hi there!

"AT MOST" can be denoted by the sign:

r + 7 ≤ 91

Or, r + 7 has to be LESS THAN or EQUAL TO 91.

We can solve using subtraction; subtract 7 from both sides:

r + 7 - 7 ≤ 91 - 7

r ≤ 84

Answer:

yes, none of the y values repeat themselves.

slope=2

slope-int form= y=2x+7

Step-by-step explanation:

If the radius of Jasmine's swimming pool is 4.2 meter, then it's circumference is 26.4 meters.

The "Circumference" of a circle is known as the distance around the boundary of a circle.

The circumference of a circle is given by the formula : 2 × π × radius,

where π (pi) is a mathematical constant approximately equal to 3.14,

We are given that Jasmine's swimming pool has a radius of 4.2 meters.
So, we can calculate the circumference of the pool as :

⇒ Circumference = 2 × 3.14 × 4.2 meters,

⇒ Circumference ≈ 26.4 meters,

Therefore, the circumference of Jasmine's swimming pool is 26.4 meters.

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Answer:

Step-by-step explanation:

You want to know a thermometer's reading 4 minutes and 9 minutes after begin brought into a room with a temperature of 36 °C if its initial reading is 10 °C, and it rises to 14 °C after 2 minutes.

Newton's law of cooling tells you the temperature difference of 36 -10 = 26 °C will decline exponentially. If it declines to 36 -14 = 22 °C after 2 minutes, then the temperature reading can be modeled by ...

  T = 36 -26·(22/26)^(t/2)

At times of t=4 and t=9, the temperature readings will be ...

__

Additional comment

The time constant of this thermometer is about 12 minutes, so it will take about 67 minutes to read within 0.1 °C of the room temperature.

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Answer: \(4m^{6}\)

Step-by-step explanation:

\(\frac{8.4m^{9} n^{5} }{2.1m^{3}n^{5}}\)

Dividing exponents is the same as subtracting the exponents, so

\(\frac{m^{9}}{m^{3}} =m^{9-3}=m^{6}\)

\(\frac{n^{5}}{n^{5}} =n^{5-5}=n^{0}=1\)

So now our equation looks like

\(\frac{8.4m^{6}}{2.1}\)

Now we can divide the numbers

8.4/2.1 = 4

So your final answer is \(4m^{6}\)

Answer:

1.0833333 Feet

Hope this helps! If I could have brainliest im trying to level up.

Step-by-step explanation:

13 Inches =

1.0833333 Feet

(rounded to 8 digits)

Each coordinate was multiplied by 2 instead of divided by 2

the correct coordinates are

preimage                                image

A (2, 5)   → (2 * 1/2, 5 * 1/2) →   A' (1, 2.5)

B (2, 0)  → (2 * 1/2, 0 * 1/2) →    B' (1, 0)  

C (4, 0)  → (4 * 1/2, 0 * 1/2) →    C' (2, 0)

Dilation is a method of transformation that magnify or shrink the preimage depending on the scale factor

The transformation rule for dilation is as follows

(x, y) for a scale factor of r → (rx, ry)

following similar procedure for the given problem we solve with scale factor of 1/2

preimage                                 image

A (2, 5)   → (2 * 1/2, 5 * 1/2) →   A' (1, 2.5)

B (2, 0)  → (2 * 1/2, 0 * 1/2) →    B' (1, 0)  

C (4, 0)  → (4 * 1/2, 0 * 1/2) →    C' (2, 0)

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Answer:

f(1/x)=5+3x/6+7x ; 9(x-2)=\(\sqrt{x} ^2-8x+12\) the \(\sqrt{x}\) goes over the -8x+12

After considering all the given data we conclude that after performing simplification on the given sub question the values are A)-15x⁶y⁸ , B) -15x⁶y⁸ (x² + y²) and C) -7.5xy⁴

To proceed and evaluate the given expression we have to consider operating with the help of power rule which will enable the simplification by using multiplying  two powers with the same base, and finally use summation of their exponents.
In a system of function when a  large numbers is expressed in terms of powers is referred to as exponents. The exponent is a number that has a dedicated spot as a superscript over a number. 
Let us apply simplification on the given expressions one by one.
A) (-3x²y⁶)(5x⁴y²) = -15x⁽²⁺⁴⁾y⁽⁶⁺²⁾ = -15x⁶y⁸

B) -15x⁸y⁸ - 15x⁶y⁸  = -15x⁶y⁸ (x² + y²)

C) -15x⁸y¹² / 2x⁶y⁸  = -7.5x²y⁴
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The complete question is
Simplify
A) (−3x2y6)(5x4y2).
B) −15x8y8 −15x6y8
C) −15x8y12/ 2x6y8

Answer:

14

Step-by-step explanation:

To find the value of (f-g)(2), we first need to compute the function (f-g), which is defined as the difference between f(x) and g(x), and then evaluate it at x=2.

So, (f-g)(x) = f(x) - g(x)

Substituting the given functions, we get:

(f-g)(x) = (3x^2 + 1) - (1-x)

(f-g)(x) = 3x^2 + x

Now, to find (f-g)(2), we substitute x=2 into the expression we just obtained:

(f-g)(2) = 3(2)^2 + 2

(f-g)(2) = 3(4) + 2

(f-g)(2) = 12 + 2

(f-g)(2) = 14

Therefore, the value of (f-g)(2) is [14.]

Answer:

\(\displaystyle m=0\)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Point (5, 9)

Point (-3, 9)

Step 2: Identify

x₁ = 5, y = 9

x₂ = -3. y = 9

Step 3: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Answer:

2

Step-by-step explanation:

Answer:

2/21

Step-by-step explanation:

There are two kids who play baseball and basketball, and 21 students in total. Making the answer 2/21

Hi!

The answer is C (72a^3)

I hope this helps!

Feel free to mark brainliest

Answer:

No solution

Step-by-step explanation:

Because when you add 5 on both sides to take away the negative 5 it does not show a true statement. Since:

7x does not equal 7x + 10

Answer:

-4

Step-by-step explanation:

Because 1/2 times -4 equals -2

then -2+2=0

The best first step to solve equations, x+y = 3 and 4x-y = 7, is to add the first equation to the second equation.

According to the question,

We have the following system of equations:

x+y = 3 .....(1)

4x-y = 7 ....(2)

Now, these equations can be easily solved by adding the first equation to the second equation because we will only then have one variable which is x and y when added to -y will result in zero.

We can solve these equations by adding as follows:

x-y+4x+y = 3+7

5x = 10

x = 10/5

x = 2

Now, we can put the value of x in equation 1 to find the value of y:

2+y = 3

y = 3-2

y = 1

Hence, the correct option is B.

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Answer:

7 people

Step-by-step explanation:

Count the x’s that corresponds in the 3 section. Make sure to count next time!

Answer:

15

Step-by-step explanation:

at least means that number or more

Add up the number of x's for 3 and 4

3: 7

4: 8

total : 15

15 people took 3 or more photographs

Answer:

1. x = 2, y = -2 prod: -4 / 2 = -2

2. x = 6, y = -6 prod: -36 / 2 = -13

3. x = -1, y = -1 prod: 1 / 2 = 0.5

4. x = -4, y = -1 prod: 4 / 2 = 2

5. x = 10, y = -1 prod: -10 / 2 = -5

Answer:

we need the answer for median

Step-by-step explanation:

Answer:

10.4 it is the correct answer please mark me as a brainlist

Answer:

it is b

Step-by-step explanation:

Answer:

Step-by-step explanation:

surface area of a square pyramid

= Area of base + 1/2 base perimeter * slant height

= (3 x 3) + (1/2 x (3*4) x 5)

= 9 + 30

= 39 km²