Can someone help with an explanation? This is finding Surface Area.​

Answer:

50 m

Step-by-step explanation:

Answer: 90

Step-by-step explanation:

450/5 or 450 divided by 5

you can work this out by figuring out 45/5 which is 9

so 450/5 equals 90

he should read 90 pages per day

Answer:

90

Step-by-step explanation:

Because if you divide the pages into the 5 day it would be 90

450 divide by 5 = 90

Answer:

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

QG=GS

x+5=2x-2

x=7

QG=7+5=12

Answer:

y= -x+5

Step-by-step explanation:

you can decide whether or not to put a 1 in front of the x, but i don't think it's necessary

i hope this helps :)

Answer:

f(x)=8x +118

Step-by-step explanation:

Answer:

6 + d =

Step-by-step explanation:

Sum means the expression is using addition

Sum of dogs and 6 cats = 6 + d

Answer:

470 [tex]cm^{3}[/tex]

Step-by-step explanation:

8x9x10 = 720

5x5x10 = 250

720-420 = 470

Answer:

C.

4x – y = 7

Step-by-step explanation:

Write in standard form.

4

x

−

y

=

7

y

=

4

x

−

7

The standard form of a linear equation is  

A

x

+

B

y

=

C

.

Rewrite the equation with the sides flipped.

4

x

−

7

=

y

Move all terms containing variables to the left side of the equation.

Tap for more steps...

4

x

−

y

−

7

=

0

Add  

7

to both sides of the equation.

4

x

−

y

=

7

variable

A letter used to represent a number value in an expression or an equation.

equation

A mathematical statement that says two expressions have the same value; any number sentence with an  

=

.

Answer:

-42

Step-by-step explanation:

Following Order of Operations, we have to multiply before subtracting, so

[tex]2-2*22[/tex]

[tex]=2-44[/tex]

[tex]=-42[/tex]

Using order of operations, we get -42.

Step-by-step explanation:

3+5+7+12+13+14+20+23+23+23+23+29+39+40+56=318

318/15=21.2

Answer:

hhhh

Step-by-step explanation:

Answer:

Probability = 37.5%

Step-by-step explanation:

Prob (Race fast) = 10%, Prob (Slight Fast) = 40%, Prob (Normal Car) = 50%

Prob (Red Car) = 70% of race fast cars, & 45% of slight fast cars, & 30% of Normal cars, & = (70% x 10%) + (45% x 40%) + (30% x 50%) = 7% + 18% + 15% = 40%

Prob (Normal & Red Car) = 30% of 50%  = 15%

Prob (Red car I Normal car) = Prob (Red & Normal Car I Normal Car) =  15% / 40% = 37.5%

Answer:

common form to write the equation of a circle in is the center-radius form. The center-radius form is: (x−h)2+(y−k)2=r2 Here, the center point is denoted by (h,k) and r is the radius of the circle. The first example he does is: Find the center and radius of the circle given by the equation (x−2)2+(y+4)2=25.

Answer:

x² + y² = 16

Step-by-step explanation:

We need to write the standard equation of circle with , centre (0,0) and radius 4 unit . The Standard equation of the circle ⭕ is ,

=> ( x - h)² + (y -k)² = r²

=> ( x -0)² + (y-0)² = 4²

=> x² + y² = 16 .

• Hence the equation of the circle is x² + y² = 16.

Answer:

650 cm²

Step-by-step explanation:

Use the formula 2(lw+wh+lh)

Plug in the stuff: 2(5*9+9*20+5*20)=2(45+180+100)=2(325)=650 cm²

And there you go!

Please mark brainliest!

Answer:

[tex] x = \dfrac{1}{5} \pm \dfrac{\sqrt{46}}{5} [/tex]

Step-by-step explanation:

5x^2 - 2x - 9 = 0

a = 5; b = -2; c = -9

[tex] x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} [/tex]

[tex] x = \dfrac{-(-2) \pm \sqrt{(-2)^2 - 4(5)(-9)}}{2(5)} [/tex]

[tex] x = \dfrac{2 \pm \sqrt{4 + 180}}{10} [/tex]

[tex] x = \dfrac{2 \pm \sqrt{184}}{10} [/tex]

[tex] x = \dfrac{2 \pm \sqrt{4 \times 46}}{10} [/tex]

[tex] x = \dfrac{2 \pm 2\sqrt{46}}{10} [/tex]

[tex] x = \dfrac{1 \pm \sqrt{46}}{5} [/tex]

[tex] x = \dfrac{1}{5} \pm \dfrac{\sqrt{46}}{5} [/tex]

Answer:

yes

Step-by-step explanation:

side 5 and side 12 where the angle is you can form a square in the corner

Answer:

153.938 units². On Microsoft Edge they have a calculator specfically for surface area, volume, area, and more. Check it out.

Step-by-step explanation:

Answer:

i would believe it is 49 units2

Step-by-step explanation:

Answer:

4%

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

p(x, y) reflection on y axis = p'(-x, y)

Answer:

7 times (*) 8

Step-by-step explanation:

Product in this case means multiplication

Answer:

With replacement

[tex]probability \ of \ spade = \frac{13}{52} = \frac{1}{4} \\\\ probability \ of red\ card = \frac{26}{52} =\frac{1}{2}[/tex]

[tex]probability \ of \ spade \ then \ red\ card\ without\ replacement =[/tex][tex]\frac{1}{4} \times \frac{1}{2} = \frac{1}{8}[/tex]

Without replacement

[tex]probability \ of\ spade = \frac{13}{52} = \frac{1}{4} \\\\probability \ of \ spade\ again =\frac{12}{51} = \frac{4}{17}[/tex]

[tex]probability \ of \ spade \ then \ red\ card\ without\ replacement = \frac{1}{4} \times\frac{4}{17} =\frac{1}{17}[/tex]

Answer: (a)

Step-by-step explanation:

Given

The diameter of the inner circle is [tex]d=14\ m[/tex]

thickness of the strip is [tex]t=2\ m[/tex]

So, the radius of inner circle is [tex]r=7\ m[/tex]

Radius of the outer circle [tex]R=7+2=9\ m[/tex]

Area of the shaded region is the difference of the area of outer circle and inner circle.

[tex]\Rightarrow \pi R^2-\pi r^2\\\Rightarrow \pi (9^2-7^2)\\\Rightarrow 3.142\times 32\\\Rightarrow 100.5\ m^2[/tex]

hence, option (a) is correct.

Answer:

16 times

Step-by-step explanation:

2 out of 5 is 40%

40 x 40% = 16

Answer: 16 times

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

B.1593

Step-by-step explanation:

Answer:

Part A

The null hypothesis H₀; The injuries and illnesses have no relationship in the weekend

The alternative hypothesis Hₐ; The injuries and illnesses occur with equal frequency on the weekend

Part B

P-value from;

Tables, 0.1 < P([tex]\chi^2[/tex] < 4.12) < 0.9

Chi-square calculator, P([tex]\chi^2[/tex] < 4.12) = 0.87

Step-by-step explanation:

The given data is presented as follows;

[tex]\begin{array}{ccc}Day&&Number\\Fri&&21\\Sat&&19\\Sun&&10\end{array}[/tex]

The significance level, α = 0.05

Part A

The hypothesis is to test that the given injuries and illnesses occur with equal frequency of the weekend

The null hypothesis H₀; The injuries and illnesses have no relationship in the weekend

The alternative hypothesis Hₐ; The injuries and illnesses occur with equal frequency on the weekend

Let the expected frequency, each day of the weekend = (21 + 19 + 10)/3 = 50/3 = 16.[tex]\overline 6[/tex]

We get;

[tex]\begin{array}{ccc}Day & Observed \ Number& Expected \ Number \\Fri&21& 16.\overline 6\\Sat&19&16.\overline 6\\Sun&10&16.\overline 6\end{array}[/tex]

The chi-square test statistics

[tex]\chi^2[/tex] = (21 - 50/3)²/(50/3) + (19 - 50/3)²/(50/3) + (10 - 50/3)²/(50/3) = 4.12

The [tex]\chi^2_u[/tex] with (3 - 1) = 2 degrees of freedom = 5.991

The decision rule, [tex]\chi^2[/tex] > 5.991, we reject the null hypothesis

Given that we have [tex]\chi^2[/tex] = 4.12 < 5.991, we fail to reject H₀, therefore, there is not enough statistical evidence to suggest that the meal plan are related at α = 0.05

Part B

From the chi-square table, we have the p-value at 2  degrees of freedom for the test statistic of 4.12 is between 0.9 and 0.1

Using the chi-square calculator, we have;

P([tex]\chi^2[/tex] < 4.12) = 0.87.

Answer:

15

Step-by-step explanation:

hypotenuse (h) = 25

perpendicular (p) = 20

base (b) = ?

we know by using Pythagoras theorem we get

b = √h² - p²

  = √25² - 20²

  = √225

  = 15