4.2z + 3.8z simplify the expression ​(Use the operation symbols in the math palette as needed. Simplify your answer. Use whole numbers or decimals for any numbers in the​ expression.)

Answer:

Decimal

Step-by-step explanation:

Im going to assume you double pasted, happens sometimes. so the answer would be decimal.

Answer:

117 degrees

Step-by-step explanation:

So we already know that one angle is 38 degrees, so we have that one. The angle, 101 is exterior, and we have to subtract 180 from that to get the interior angle. We get a difference of 79. Since the sum of a triangle's interior angles are 180, we have to add 38+79 to get 117. Then, we have to subtract it from 180 to get the value of the interior angle as 63 degrees. Because x is on the outside, we have to again subtract 63 from 180 to get the missing value of x as 117.

180° - 101° = 79°

180° - (38° + 79°)

180° - 117° = 63°

180° - 63° = 117°

x = 117°

Answer:

c

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

it is c i just got 100 percent

Answer:

Twice

Step-by-step explanation:

Because 24 x 24 would be 48

Answer:

Width of rectangular piece = x = 8 inches

Step-by-step explanation:

Perimeter of rectangular piece = 62 inches

Let width of rectangular piece= x

and length of rectangular piece = x+15

We need to find width i.e value of x

The formula used for perimeter of rectangle is: [tex]Perimeter=2(Length+Width)\\[/tex]

Putting values in formula and finding Width:

[tex]Perimeter=2(Length+Width)\\\\62=2(x+x+15)\\62=2(2x+15)\\62=4x+30\\62-30=4x\\4x=32\\x=\frac{32}{4}\\x=8[/tex]

After solving we get value of x = 8

So, Width of rectangular piece = x = 8 inches

Answer:

The opposite sides are equal

Answer:

Step-by-step explanation:

2 2/5 = 12/5

-2 2/5= -12/5

To change a mixed number to an improper fraction, take the bottom number or denominator and times by the whole number and then add the top or numerator. So 5*2=10+2=12 put that on top of the denominator you already have or 5

Answer:

y=22.1

Notice how 24.7 and 11.7 are 1.3 times larger than the corresponding sides in the smaller triangle. Therefore, 17 times 1.3 should give us our y value.

17 x 1.3=22.1

22.1=y

Step-by-step explanation:

Answer: -66d-21 I think.

Step-by-step explanation:

9(-8d-7)+6(d+7)

-72d-63+6d+42 Distributive Property

-72d+6d+-63+42 Combine Like Terms

-66d-21 Answer

Answer: y= -3x + 2

Step-by-step explanation:

y=mx+b

m= y2-y1 / x2-x1 = -1 - 5 / 1 - (-1)= -6/2 = -3

y=-3x+b

pick a point and solve for b by plugging in the x and y values of that point.

y=-3x+2

Answer:

Angle A

Step-by-step explanation:

subtract 3x and 5x

you get 2x

-5-3=

you get -8

divide -8/2x

x=-4

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Sum of the measures is equal to 180° .

So :

[tex]Angle \: \: A + Angle \: \: B + Angle \: \: C = 180 \\ [/tex]

Thus :

[tex](5x - 5) + (3 x + 3) + (5x) = 180 \\ [/tex]

Collect like terms

[tex]13x - 2 = 180[/tex]

Add sides 2

[tex]13x - 2 + 2 = 180 + 2[/tex]

[tex]13x = 182[/tex]

Divide sides by 13

[tex] \frac{13x}{13} = \frac{182}{13} \\ [/tex]

[tex]x = 14[/tex]

_________________________________

[tex]Angle \: \: B = 3x + 3[/tex]

[tex]Angle \: \: B = 3(14) + 3[/tex]

[tex]Angle \: \: B = 42 + 3[/tex]

[tex] Angle \: \: B = 45°[/tex]

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Answer:

Brainliest if I am right? uwu

Answer:

k = 4

Step-by-step explanation:

k is the difference of y-intercepts (where the lines intersect with the y-axis). So, subtract the y-intercept of f(x) from the y-intercept of g(x).

2 - (-2) = 4

Hope that helps! :D

Answer:

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Answer:

equal

Step-by-step explanation:

Answer:

equal

Step-by-step explanation:

30.030 can be simplified to 30.03. the zero after the .03 is unnecessary. since 30.030 can be written as 30.03, 30.030 is equal to 30.03

Answer:

x = -3

Step-by-step explanation:

Answer:

x= -11

Step-by-step explanation:

you multiple 4 times the things in the parentheses and solve for x

Answer:

The equation y = -6x + 1 represents the line ⇒ A

Step-by-step explanation:

The form of the linear equation is y = m x + b, where

The rule of the slope is m = [tex]\frac{y2-y1}{x2-x1}[/tex] , where

∵ The line passes through points (1, -5) and (3, -17)

∴ x1 = 1 and y1 = -5

∴ x2 = 3 and y2 = -17

→ Substitute them in the rule of the slope to find it

∵ m = [tex]\frac{-17--5}{3-1}[/tex] = [tex]\frac{-17+5}{2}[/tex] = [tex]\frac{-12}{2}[/tex] = -6

∴ m = -6

→ Substitute it in the form of the equation above

∴ y = -6x + b

→ To find b substitute x by 1 and y by -5 in the equation

∵ -5 = -6(1) + b

∴ -5 = -6 + b

→ Add 6 to both sides

∴ 1 = b

→ Substitute it in the equation

∴ y = -6x + 1

∴ The equation y = -6x + 1 represents the line

Sucks </3

HSGYAUSHBJASKDUGAYHD

anyways

goodluck

Answer:

for you explanation just put i chose 6 to the third power because that is the only answer that does not equal 64

Step-by-step explanation:

Answer:

In March he weighed 210 pounds

Step-by-step explanation:

In May he weighs 197.4 pounds

Answer:

Step-by-step explanation:

Slope-intercept form:

Given

Substitute values to find b:

Then the line is:

Answer:

Length of DB = 19 (Approx)

Step-by-step explanation:

Given:

AC=7

AD=6

BC=18

Find:

Length of DB

Computation:

AB = AD + DB

AB = 6 + DB

AC + BC ≥ AB

7 + 18 ≥ 6 + DB

19 ≥  DB

Length of DB = 19 (Approx)

Given:

Total distance covered by Jamie = [tex]6\dfrac{1}{2}[/tex] miles

She ran every day = [tex]\dfrac{1}{6}[/tex] miles

To find:

The number of days in which she go for running.

Solution:

Total distance covered by Jamie [tex]=6\dfrac{1}{2}[/tex] miles

                                                       [tex]=\dfrac{6\times 2+1}{2}[/tex] miles

                                                       [tex]=\dfrac{12+1}{2}[/tex] miles

                                                       [tex]=\dfrac{13}{2}[/tex] miles

She ran every day = [tex]\dfrac{1}{6}[/tex] miles

Now,

[tex]\text{Required number of days}=\dfrac{\text{Total distance covered}}{\text{Distance covered each day}}[/tex]

[tex]\text{Required number of days}=\dfrac{\dfrac{13}{2}}{\dfrac{1}{6}}[/tex]

[tex]\text{Required number of days}=\dfrac{13}{2}\times \dfrac{6}{1}[/tex]

[tex]\text{Required number of days}=39[/tex]

Therefore, the required number of days is 39.                                                  

Answer:

To determine the nature of roots of quadratic equations (in the form ax^2 + bx +c=0) , we need to calculate the discriminant, which is b^2 - 4 a c. When discriminant is greater than zero, the roots are unequal and real. When discriminant is equal to zero, the roots are equal and real.

ANSWER:

when the value of (b^2-4ac) is positive, then the roots are real and distinct.

when it is 0 the roots are equal and if it is negative than its root is not real.

Answer: 2.5 meters long

Step-by-step explanation:

Answer:

72- no

36-yes

8- no

16- yes

81-yes

64-yes

48-no

Step-by-step explanation:

Answer: I think

#3- A

#4- C

Answer:

c=2 k=11 n=14

Step-by-step explanation:

Answer: 129

Step-by-step explanation:

Answer:

The first one

Step-by-step explanation:

1. 36/-3 = -12

2.-4-(-16) =12

3.(-3)(-4) = 12

4.21+ (-9) = 12

The first one is the only one which doesn't equal 12. It equals -12 and that's why it doesn't belong.

Let me know if you need further detail for them :)