Match together cards with equivalent ratios: 3:4, 10:5, 50:100, 2:1, 5:2, 15:20, 15:6, 1;2,

[tex]9y^2-12y-14=0\\D=(-12)^2-4\times9\times(-14)=144+504=648=(\pm18\sqrt{2})^2 \\\\y_1=\dfrac{12+18\sqrt{2} }{18} =\dfrac{2+3\sqrt{2} }{3} \\\\y_2=\dfrac{12-18\sqrt{2} }{18} =\dfrac{2-3\sqrt{2} }{3}[/tex]

Answer:

Solve the equation for y by finding a,b, and c of the quadratic then applying the quadratic formula.

Desimal Form:  2.08088022…,−0.74754689…

the guy on top of me is right I just gave you the desimal form he/she give you the rest

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

5 divided by 5 equals 1 and whatever we do to one side, do to the other. 30 divided by 5 is 6. So, 5 to 30 is equivalent to 1 to 6.

Answer:

2

Step-by-step explanation:

x^2 = 16

x = + √16

x = + 4

therefore

x= -4 or 4

there are 2 solutions in the equation

Answer:

1767.15cm^3

Step-by-step explanation:

volume of a sphere is V= 4/3 *pi* r^3

and pi is 22/7 or 3.142

and the value for r is 7.5

therefore v is 4/3 *3.142*7.5^3

v= 1767.15

Answer:

7cm

Step-by-step explanation:

15 - 8

Hypotenuse is the longest side

Answer:

  350

Step-by-step explanation:

The solution to the equation can be found by multiplying by the denominator, then dividing by its coefficient.

  [tex]0.22 = \dfrac{77}{x}\qquad\text{given}\\\\0.22x = 77\qquad\text{multiply by $x$}\\\\x=\dfrac{77}{0.22}=350\qquad\text{divide by the coefficient of x}[/tex]

The missing value in the fraction is 350.

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Additional comment

Here, we have rewritten the percentage as a decimal fraction. You could also rewrite it as a ratio of two integer: 22% = 22/100. Sometimes there is confusion about percentages. It can help to think of the % symbol as meaning /100:

  22% = 22/100

Of course, that is "twenty-two hundredths" or 0.22.

If you just write the problem using 22/100 for 22%, then you get the proportion ...

  22/100 = 77/x

  22x = 7700 . . . . . "cross multiply" (multiply by 100x)

  x = 7700/22 = 350 . . . . divide by the coefficient of x

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If you're paying attention, you see that the solution of this kind of equation has the appearance that the denominator variable and the left-side value are simply swapped:

  [tex]0.22 = \dfrac{77}{x}\ \leftrightarrow\ x=\dfrac{77}{0.22}[/tex]

Effectively, we have multiplied both sides of the equation on the left by x/0.22. There is a property of equality that lets us do that. There is no such thing as a property of equality that says "swap with denominator." You must always pay attention to what is allowed by the properties of equality.

Answer:

[        [tex]10000(2)^{-n}[/tex]       ]    where n is the number of hours.

Because the beginning will 10000/2 = 50000, then it keeps double the dividing the time.

Answer:

[tex] {7}^{2} [/tex]

[tex]7[/tex]

equations

Answer:

the surface area would be

94 cm squared

Step-by-step explanation:

total area

20 × 17 = 340cm²

unshaded region

9 × 6 = 54cm²

area of shaded region

340 - 54 = 286cm²

Answer:

1) [tex]x = -1[/tex]  ||     2) [tex]x = 10[/tex]

Explanation:

1)

→ [tex]\log _3\left(\frac{1}{3}\right)=x[/tex]

→ [tex]\frac{1}{3} = 3^x[/tex]

→ [tex]3^{-1} = 3^x[/tex]

→ [tex]x = -1[/tex]

2)

→ [tex]\log _3\left(x-1\right)=2[/tex]

→ [tex]x - 1 = 3^2[/tex]

→ [tex]x -1 = 9[/tex]

→ [tex]x = 9 +1[/tex]

→ [tex]x = 10[/tex]

[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]

Here's the solution ~

[tex]\qquad \sf  \dashrightarrow \: log_{ {3} }( \frac{1}{3} ) = x[/tex]

[tex]\qquad \sf  \dashrightarrow \: log_{ {3} }( {3}^{ - 1} ) = x[/tex]

[tex]\qquad \sf  \dashrightarrow \: log_{ {3} }( {3})^{ - 1 } = x[/tex]

[tex]\qquad \sf  \dashrightarrow \: - 1 \times log_{3}(3) = x[/tex]

[tex]\qquad \sf  \dashrightarrow \: - 1 \times 1 = x[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = - 1[/tex]

[tex]\qquad \sf  \dashrightarrow \: log_{3}(x - 1) = 2[/tex]

[tex]\qquad \sf  \dashrightarrow \: x - 1 = {3}^{2} [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 9 + 1[/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 10[/tex]

Answer:

x≥ -5

Step-by-step explanation:

graph a shaded point on -5 and extend the line to the right since it is greater than or equal to -5

Answer:

X ≥-5, you would draw a number line and shade in a closed circle, then point the arrow to the right

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

if u put  1.02 into the thousandths it becomes 1.020 which is obviously less than 1.165

Answer:

here's your answer hope it helps you

Step-by-step explanation:

the upper bound of an interval uses the number of samples to get its value. same is said for the population standard deviation.

Answer:

5

Step-by-step explanation:

You simply just divide 100 by 20 and get your answer which is 5.

When you distribute something, you are dividing it into parts. In math, the distributive property helps simplify difficult problems because it breaks down expressions into the sum or difference of two numbers

Answer:

  126.7 if B=80

  93.3 if B=70

Step-by-step explanation:

Let F represent the student's score on the final exam, and let B represent the percentage required for a grade of B. Then we must have ...

  0.60(61) +0.10(54) +0.30F = B

  B = 0.30F +42

  F = (B -42)/0.3

__

If a grade of B requires 80 points or more, then the required grade on the final is ...

  F = (80 -42)/0.3 = 38/0.3 = 126 2/3

The student must get 126.7% on their final to achieve an overall average of 80.

__

If a grade of B requires 70 points or more, then the required grade on the final is ...

  F = (70 -42)/0.3 = 28/0.3 = 93 1/3

The student must get 93.3% on their final to achieve an overall average of 70.

Answer:

120/40=3

Step-by-step explanation: Hope this helps

Answer:

32°

Step-by-step explanation:

Let the angle next to 121° be a,

a+121°=180°

a=180-121=59°

Now we have a=59°,

89° (given) and x, these threes form a triangle, therefore,

x+a+89°=180°

×+59°+89°=180°

x+148°=180°

x=180°-148°

x=32°

Answer:

for a three hour job it would be £105

Step-by-step explanation:

to find how much he charges an hour, we divide 140 by 4 and get 35.

from there we multiply 35(£) by 3(hours) and get 105(£).

Answer:

180m

Step-by-step explanation:

The figure shown in the picture is a right triangle.

We have two of it's sides and need to find the hypotenuse (the side in front of the right angle).

To find that we must use the Pythagorean theorem:

[tex]c^{2} = {a}^{2} + {b}^{2} [/tex]

Side a is 400m and side b is 300m.

Therefore:

[tex]c^{2} = {300}^{2} + {400}^{2} [/tex]

[tex]c = \sqrt{300 \times 300 + 400 \times 400} = 500[/tex]

Now that we know that side c is 500m we must just substract the distance between Marla and the dock with the lenght of the side to find the answer

500 - 320 = 180m

Answer:

She is 180m from the information Center

She walked 240m from the parking lot to the lake.

Step-by-step explanation:

I searched your question and found the key answers. below is my backup explanation, hope this helps! brainliest, please!

Answer:the answer is d

Step-by-step explanation: it a d bc i know

Answer:

simple math convert mph to fps and multiply by 72: 105.6

Step-by-step explanation:

Answer:

it's a unit fraction by cancelling it

Answer:

Whole fraction

Step-by-step explanation:

40/40

= 1

☆ Since we get 1 as the answer, the fraction is a whole fraction.

Hope it helps ⚜

Answer:

[tex]p=-10[/tex]

Step-by-step explanation:

Given the following question:

[tex]-5=p+5[/tex]

In order to find the answer, we subtract 5 on both sides:

[tex]-5=p+5[/tex]
[tex]5-5=0[/tex]
[tex]-5-5=-10[/tex]
[tex]-10=p[/tex]
[tex]p=-10[/tex]

Hope this helps.

Answer: If the radius is 23 then the answer is 1661.9 (WHEN ROUNDED & WITHOUT). If the radius is 11.5 the answer is 415.5 (WHEN ROUNDED)

Step-by-step explanation:
The formula for the area of a circle is: radius x radius x pi/3.14

Answer:

330

Step-by-step explanation:

When we are at 30 degrees on the unit circle, we are at the point ([tex]\sqrt3[/tex]/2, 1/2) so if we go to -30 degrees (330 degrees), we will be at point  (-[tex]\sqrt3[/tex]/2, -1/2).

Note: (cosine, sine)

Answer:

3.36

Step-by-step explanation:

47/14

3 5/14

5 divided 14 is 0.3571428571

0.3571428571 + 3 = 3.357142857

3.357142857

3.36

Answer:

2pi(5) - 2pi(3)

Step-by-step explanation:

hopefully that helped. just use formula and plug in the radius (:

Answer:

28.26 cm ^2

Step-by-step explanation:

A= [tex]\pi[/tex] r ^2

A= 3.14 x 3 x 3

A = 28.26 cm ^2

Answer:

solution

Step-by-step explanation:

you can separate it back into its original forms

(Reminder: mixtures cannot be separated and cannot return to its original forms. solutions can be separated and can return to its original forms)