Which temperature is colder -30 degrees or -10 degrees?

Answer:

x=70

Step-by-step explanation:

Answer:

C≈81.68cm is the answer.

Answer:

2200

Step-by-step explanation:

8+7=15 4125/15=275 275x8=2200

Answer:

204 ft²

Step-by-step explanation:

Let's split the room to make it look like there are two squares.

We can make it to where one square is 14 ft long and 10 ft wide.

The other square can be 16 ft long and 4 ft wide

Find the areas of those two squares by multiplying width and length

14 x 10 = 140

16 x 4 = 64

Add those two together

140 + 64 = 204

Answer:

a

Step-by-step explanation:

Answer:

8y + 9 = 6

Step-by-step explanation:

8 times a number (8y) and 9 (+9) equals 6 (=6)

Answer:

  x° = 55°

Step-by-step explanation:

An exterior angle is equal to the sum of the remote interior angles:

  x° = 21° +34°

  x° = 55°

Answer:

0839

Step-by-step explanation:

First of all, let's cancel 0620 and 0746, because they dont have any other number that has the same last 2 digits as them. Jean would've immediately known the train number if it was one of these two.

Now, when Marie says "I'm sure that neither does Jean", it means she is guaranteed Jean doesn't know the train number. It mean she couldnt've gotten 06 or 07, as 0620 and 0746 have it.

We're left with 0825,0839,0917,0925 and 0950
When Jean replies he knows the train number, it means he couldnt've gotten 25, as it's repeated.

And when Marie responds she knows as well, she couldnt've gotten 09, as it's also repeated.

We can cancel 0825,0917,0925 and 0950

So, the train number is 0839

Answer:

x = 30

y = 114

Step-by-step explanation:

considering DC || AB the sum of angle <D and angle <A must be equal to 180 because they are supplementary:

5x + x = 180 add like terms

6x = 180 divide both sides by 6

x = 30

Same goes for angle <C and angle <B:

y + 2.2x = 180 we know the value of x is 30

y + 2.2*30 = 180

y + 66 = 180 subtract 66 from both sides

y = 114

Answer:

$29.7

Step-by-step explanation:

10 percent of 27 is 2.7 then you add 27 and 2.7 and you get 29.7

Answer:

6

Step-by-step explanation:

5/10

1/2

then 6 trust me

Answer:

b > -3

Step-by-step explanation:

-5(2b+7) + b< -b - 11

Distribute -5

-10b - 35 + b < - b - 11

Combine like terms.

-9b - 35 < - b - 11

Add b to both sides.

-8b - 35 < -11

Add 35 to both sides.

-8b < 24

Divide by -8. REVERSE THE SYMBOL!! because dividing by a negative number.

b > -3

Product of two polynomials can be done by distribution of multiplication over addition. The product of [tex](x+5)(x-5) = x^2 - 25[/tex]

Suppose a, b and c are three numbers. Then we have:

[tex]a(b + c) = a\times b + a\times c[/tex]

(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)

The product result of the given expression is obtained as:

[tex](x+5)(x-5) = x(x - 5) + 5(x - 5) \\\\(x+5)(x-5) = x^{1+1} - 5x + 5x - 25 = x^2 - 25[/tex]

Thus,

The product of [tex](x+5)(x-5) = x^2 - 25[/tex]

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Answer:

15: significant 16: research problem

The value of ∠BAC in the isosceles triangle is 9.7°

Cosine rule is used to show the relationship between the sides and angles of a triangle. It is given by:

a² = b² + c² - 2bc*cos(A)

where a, b, c are the sides of the triangle and A, B, C are the angles opposite the sides.

AB = AC = 1185 (isosceles), BC = 200, let ∠BAC = x°, hence:

200² = 1185² + 1185² - 2(1185)(1185)cos(x)

2(1185)(1185)cos(x) = 2808450

cos(x) = 0.9857

x = 9.7°

The value of ∠BAC in the isosceles triangle is 9.7°

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Answer:

40.4

Step-by-step explanation:

I took the test

Given Data set of people who attend the concert has a mean of 36.4.

the sum of the values by adding them all up. Divide the sum by the number of values in the data set is known as the mean.

Given The data set shows the number of people who attended a concert over a period of 10 days.

12, 35, 27, 55, 22, 23, 60, 49, 15, 66

the Sum of the given data set = 364

from the general formula of the mean

mean = (sum of data)/ number of data

Given the number of data = 10

Thus

Mean = 364 / 10

Mean = 36.4

therefore, the Mean of the given Data set is 36.4.

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Answer:

Exponent rules used:

[tex]x^{-2}=\dfrac{1}{x^2}= \dfrac{1}{(-2)^2}=\dfrac{1}{2^2}=\dfrac14[/tex]

[tex]x^{-1} = \dfrac{1}{x}= \dfrac{1}{-2}=-\dfrac12[/tex]

[tex]x^0=1\implies (-2)^0=1[/tex]

[tex]x^1=x =-2[/tex]

[tex]x^2=(-2)^2=2^2=4[/tex]

Answer:

2k³ is the GCF.

Step-by-step explanation:

GCF of [tex]10k^{3} ,6k^{3}[/tex]

Finding the factors:

=10k³[Factoring 10k³]

=2×5×k×k×k

=6k³[Factoring 6k³]

=2×3×k×k×k

Common factors in 10k³ and 6k³.

=2×k³

=2k³

GcF

[tex]\\ \tt\hookrightarrow 2(k)(k)(k)[/tex]

[tex]\\ \tt\hookrightarrow 2k^3[/tex]

The amount of money Candy started with after spending on drinks and cakes is £7.95

She bought a drink for £1.45 and a piece of cake for £1.20.

She has two thirds of here money left.

Let the money she has initially  = x

Therefore,

2 / 3 x = x - 1.45  - 1.20

2 / 3 x = x - 2.65

subtract x from both sides

2 / 3 x - x = - 2.65

2x - 3x / 3 = - 2.65

- x / 3 = - 2.65

cross multiply

-x = - 2.65 × 3

- x = -7.95

x = £ 7.95

Therefore, Candy started with £7.95

l

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Answer:

Inequality:[tex]0.25x\geq 145[/tex]

Answer: At least 580 cookies

Step-by-step explanation:

Lets say they sell x cookies.

Now, that means they will make 0.25x as their income(the price multiplied by the number of cookies).

We know that totally they need to make 100+45 dollars, because that is what will give them a $100 profit. So they need to make $145

Now just set 0.25x equal to $145.

[tex]0.25x=145[/tex], and now solve

[tex]x=145*4[/tex]

[tex]x=580[/tex]

For an inequality, we could just say that:

[tex]0.25x\geq 145[/tex]

Answer:

im not good in this but thats insane.

12 meters

or what is problem?

Answer:

C

Step-by-step explanation:

Angle 1 and angle 4 sit on the same straight line which means

<1 + <4 = 180          

We are given that <4 = 105 degrees. So the equation above becomes.

<1 + 105 = 180                  Subtract 105 from both sides

<1 = 180 - 105

<1 = 75

Answer:

Step-by-step explanation:

The denominator is positive for any value of x.

So we solve the numerator:

Answer:

Step-by-step explanation:

So, to graph a parabola we must have at least 3 points, the x intercepts and the turning point. Currently the equation is in x intercept form which means that we know straight away (assuming the equation =0) that the x intercepts are:

(1,0) and (-3,0)

Now we have to find the turning point and we can do this by putting the equation into turning point form:

-5/4([tex]x^{2} +2x-3[/tex])

-5/4(([tex](x+1)^{2} -3-1[/tex])

-5/4[tex](x+1)^{2}+5[/tex]

Now we can figure out the turning point which is:

(-1,5)

Graph those three points and you should get a parabola shape

Answer: The first one 5/10 is 0.5 or 50% 5÷10. The second one 5/100 is 0.05 or 500%. The third one 5/1000 is 0.005 or 5000%.

Step-by-step explanation:

All you have to do is divide and you do that for all of them. Also did you know quotient means the answer to a division question. Wow! Also, if you see that all I did was add another zero in the middle of the decimals is because That is Decimal Place value. Here is a picture of that just in case.  The last answer for the very bottom one is what I just said about decimal place value so here is the reflection: When dividing by tens using decimals always be sure to use place value. Thank you I was happy to help!

Answer:

19/149

Step-by-step explanation:

38/298 = 19/149

7th graders who prefer English out of all students

Answer:

Numbers of packs p is 12

Step-by-step explanation:

Data :

  Money  = $18

 Price of a  card = $1.5

 Equation     :    18 ≥ 1.5p

Solve the equation  for p

       18/1.5  ≥  p

     12 ≥ p

Answer:

D. 20

Step-by-step explanation:

You do KEEP CHANGE FLIP:

Multiply 5 by 4. You get 20/1 which is 20