Cheryl read for 30 minutes twice yesterday.Today she read for twice as long as she did yesterday.choose the expression that is a correct translation of the problem.

Multiplying a matrix by a scalar is equivalent to multiplying each entry in the matrix by that scalar:

[tex]A=\begin{bmatrix}0&-3\\-5&5\end{bmatrix}\implies3A=\begin{bmatrix}0&-9\\-15&15\end{bmatrix}[/tex]

[tex]B=\begin{bmatrix}-2&-6\\2&5\end{bmatrix}\implies-6B=\begin{bmatrix}12&36\\-12&-30\end{bmatrix}[/tex]

Now combine them:

[tex]3A-6B=3A+(-6B)=\begin{bmatrix}0+12&-9+36\\-15+(-12)&15+(-30)\end{bmatrix}=\begin{bmatrix}12&27\\-27&-15\end{bmatrix}[/tex]

Answer:

<J=51°

Step-by-step explanation:

3x-2+4x-9+3x-9=180

10x-20=180

10x=200

x=20

<J=3x-9=3(20)-9=60-9=51°

Answer: Angle J = 51°

Step-by-step explanation: All angles add up to 180° in a triangle, so add every angle and set it equal to 180°.

(3x - 2) + (3x - 9) + (4x - 9) = 180

Add like terms:

10x - 20 = 180

Add 20 to both sides:

10x = 200

Divide both sides by 10:

x = 20

Now, plug x into angle J:

3(20) - 9

60 - 9

51

Angle J = 51°

Hope this helps!

Answer:

she ate my. s aa a awwosewrtfgfdswertyu

Step-by-step explanation:

wwwwojwojwowj

Answer:

$3,221.02

Step-by-step explanation:

Month 1: $2000 x 1.10 = $2,200

Month 2 = $2,200 x 1.10 = $2,420

Month 3 = $2,420 x 1.10 = $2,662

Month 4 = $2,662 x 1.10 = $2,928.2

Month 5 = $2,928.2 x 1.10 = $3,221.02

Answer:

A.  12 oz. for $1.47

B. 16 oz for $0.77

C.  5 cans for 1.79

Step-by-step explanation:

A. Divide them both, cost by quantity.

 0.99/8=0.123

  1.47/12=0.1225

The second option is better since its 0.005 less than the first option.

B. Again, divide both options.

   0.77/16=0.04125

    1.50/31=0.04838

     Second option because it is 0.00713 cents cheaper.

C.  1.77/3=0.59

     1.79/5= 0.36

       Second option is .23 cents cheaper than the first option.

I'm guessing you're talking about the ratio,

(1.65 x 10⁸) / (2 x 10³)

You can cancel the lowest power of 10:

(1.65 x 10⁸) / (2 x 10³) = (1.65 x 10⁵) / 2

Divide 1.65 in half to get 0.825. So we have

(1.65 x 10⁸) / (2 x 10³) = 0.825 x 10⁵

Move the decimal point to the right, which involves multiplying by a factor of 10 which is taken from 10⁵, so we end up with

(1.65 x 10⁸) / (2 x 10³) = 8.25 x 10⁴

Answer:

imater?

Step-by-step explanation:

Answer:

A & B

Step-by-step explanation:

Answer:

The number of yards of silk = x = 1.5 yards

The number of yards of cotton = y = 2.75yards

Step-by-step explanation:

At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of silk and cotton fabrics for a dress. Silk is $16.90 per yard and cotton is $4 per yard.

Find the solution of the system of equations. Explain or show your reasoning

{x+y=4.25} ; {16.90x+4y=36.35}

Let the number of yards of silk = x

The number of yards of cotton = y

We are given the system of equations:

{x+y=4.25} ......Equation 1

x = 4.25 - y

{16.90x+4y=36.35}....... Equation 2

4.25 - y for x in Equation 2

16.90(4.25 - y) + 4y = 36.35

71.825 - 16.90y + 4y = 36.35

71.825 - 36.35 = 16.90 - 4y

35.475 = 12.90y

y = 35.475/12.90

y = 2.75 yards.

The number of yards of cotton = y

{x+y=4.25} ......Equation 1

x = 4.25 - y

x = 4.25 - 2.75

x = 1.5 yards

The number of yards of silk = x = 1.5 yards

The yards of silk bought is  1.49 yards and the yard of cotton bought is 2.76 yards.

The two equations are known as simultaneous equation. They would be solved using elimination method.

x + y  = 4.25 equation 1

16.90x + 4y = 36.25 equation 2

where:

x = yards of silk bought

y = yards of cotton bought

In order to determine the value of x, multiply equation 1 by 4.

4x + 4y = 17 equation 3

Subtract equation 3 from 2

19.25 = 12.90x

Divide both sides of the equation by 12.90

x = 1.49 yards

In order to determine the value of y, substitute for x in equation 1

1.49 + y = 4.25

y = 4.25 - 1.49

y = 2.76 yards

To learn more about simultaneous equations, please check: brainly.com/question/23589883?referrer=searchResults

Answer:

1) x=0.5

2 x=0

Step-by-step explanation:

Question No. 1

4(x+2)=10

4x+8=10

4x=2

x=0.5

Question No. 2

12-8x=3(x+4)

12-8x=3x+12

8x-3x=12-12

5x=0

x=0

Answer:

5*8=40, not big enough product

2*5*8=80, works

3*5*8=120, too bigStep-by-step explanation:

55

and

101

that is a multiple of

4

,

5

, and

8

The numbers between 51 and 101 and multiple of 2,8, and 16 are 80 and 96.

A numeral system is a way of writing numbers; it's a way of mathematically notating a collection of numbers by utilizing a consistent set of digits or other symbols. In several numeral systems, the same set of symbols may represent various numbers.

Given that Salma must choose a number between 55 and 101 that is a multiple of 2, 8, and 16.

To calculate the numbers between 55 and 101 and are the multiple of 2,8, and 16. Get the multiple of 16 which will be the multiple of 8 and 2.

80 and 96 is the multiple of 16 and also of 8 and 2.

80 = 8 x 10 = 80

80 = 16 x 5 = 80

80 = 40 x 2 = 80

96 = 16 x 6 = 96

96 = 48 x 2 = 96

96 = 8 x 12 = 96

Therefore, the numbers between 51 and 101 and multiples of 2,8, and 16 are 80 and 96.

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Answer:

it is 56

Step-by-step explanation:

there are 4 sides and they are all 10 and if you add them they are 40 and if you do the bottom it is 16 and 40 + 16 is 56  hope it helps

Answer:

-207

Step-by-step explanation:

Using r= -3, we can substitute r in the whole equation as (-3) which gives you: ((-3)-3)^3 +(-3)^2. Now you can calculate these values in a step by step manner. (-6)^3 +9 then to -216 +9 which brings you to the answer of -207.

Answer:

225

Step-by-step explanation:

(r - 3)³ + r² if r = -3 and s = -4

(-3 - 3)^3 + (-3)^2

(-6)^3 + (9)

(-6 x -6 x -6) + 9

-216 + 9

-207

Answer:

4 hours

Step-by-step explanation:

50+5x=15x

50=20x

x=4

Answer:

The answer is C

Step-by-step explanation:

Both f(x) and g(x) have a domain of [0,infinite). and a range of [0, infinite).

Answer:

$63

Step-by-step explanation:

Answer:

they made 67.5$

Step-by-step explanation:

82.5÷5.5 is 15 15×4.50 would be 67.5

Answer:

250

Step-by-step explanation:

its 1 and then the number before it times 5. without the ones it would be 2,10,50,250

Answer:

250

Step-by-step explanation:

theres a pattern, after every 1 you multiply by 5, for example 2x5=10 10x5=50 50x5=250

Answer:

|2y|+3=2+3

3cos^2(x)+2cos(x)−1=0

3x=4−x

Step-by-step explanation:

Hoped that helped if it did may I please have a brainliest :)

Answer:

152

Step-by-step explanation:

Answer:

E non of the above

Step-by-step explanation:

To get the original number you multiply 88 by 4

Then you add 80, 85 and 95 and then minus it from the original number

You should end up with 352 minus 260

Therefore the answer would be 92 and not a given answer so your answer is e: none of the above

Answer:

48 1/4

Step-by-step explanation:

plug in the values of m,n,p

4*7+23+2/8-3

= 28+23+1/4-3

= 28+23-3+1/4

= 28+20+1/4

= 48 1/4

Answer:

4 is the correct answer.

Step-by-step explanation:

If you're taking FLVS math then this is the right answer, I got it correct on my test.

The required measure of EF is 4. Option c is correct.

ΔABC ≅ ΔEDF
A(−1, 1), B(2, 4), and C(3, 1).

In congruent geometry, the shapes that are so identical. Can be coincide to themselves.

Here,
ΔABC ≅ ΔEDF
SO, AC = EF
EF = [tex]\sqrt{(3+1)^2+(1-1)^2 }[/tex]
EF = 4

Thus, the required measure of EF is 4.

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Answer:

6c+6

Step-by-step explanation:

-24/3c+18/3+14c

-8c+6+14c

6c+6

Answer:

B- x= 10

Step-by-step explanation:

40x=400 ->  40 x 10= 400

The value of x in the expression 40x = 400 by combining like terms would be 10. Hence, option B is true.

Given that,

The expression is,

40x = 400

Used the concept of expression by combining like terms.

Here, the expression is,

40x = 400

Divide both sides by 40,

x = 400/40

Therefore, the solution of x is,

x = 10

So, Option B is true.

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Answer:True

Step-by-step explanation:

If you multiply the length value, you would get 2640 ft, so the answer is true.

Answer:

6x+8

Step-by-step explanation:

38 inches. We write an equation for how much it grows each year, plus the original 8 inches. So, 6(5)+8=38