can someone help me with this. we’re doing solving system by substitution

Answer:

7.6

Step-by-step explanation:

I know math!!!!!!!!!!

Answer:

12.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y + 2 = - 2(x - 3) ← is in point- slope form

with slope m = - 2 → A

Answer:

92905

Step-by-step explanation:

27,500=0.296e

29.6%=0.296

27,500/0.296 =e

e rounded to the nearest whole number is 92,905

Answer:

11 in.²

Step-by-step explanation:

you can divide the shape into 2 rectangles and then you solve for the 2 rectangles and then you add them up.

Answer:

3( x + 2 ). = 5( x - 2)

3x + 6 = 5x - 10

-2x = - 16

minus,minus cancel

x = 16/2

x = 8

Answer:

8

Step-by-step explanation:

3x+6=5x-10

6=2x-10

2x=16

x=8

This question is incomplete

Complete Question

If the measurement of a central angle is 5pi/6, find the length of its intercepted arc in a circle with a radius of 15 inches

a 33.4 inches

b. 35.6 inches

C. 37.5 inches

d. 39.3 inches

Answer:

d. 39.3 inches

Step-by-step explanation:

We are to find the Arc length of the circle

To solve the above question, the formula is given as:

Arc length = Central angle × radius

From the above Question, we are given:

Central angle = 5pi/6 = 5π/6

Radius = 15 inches

Hence,

Arc length = 5π/6 × 15 inches

Arc length = 235.61944901923448/ 6

Arc length = 39.26990817 inches

Approximately , the Arc length

= 39.3 inches.

Therefore, Option d is the correct answer.

Answer:

C. 3/4

Step-by-step explanation:

Using the SOH CAH TOA identity;

tan theta = opposite/adjacent

From the diagram

Opposite = x

Adjacent = 12

tan <B  = x/12

Since cot <B = 1/tan <B

cot <B = 12/x

Get x using pythagoras theorem

x² = 20²-12²

x² = 400 -144

x² = 256

x = 16

Hence cot <B = 12/16

cot <B =3/4

Answer:

C. 120°

Step-by-step explanation:

[tex]m \angle \: 2 = m \angle 6 \\ (corresponding \: \angle s) \\ \\ \because \: m \angle 6 = 120 \degree \\ ...(given)\\ \\ \red{ \bold{\therefore \: m \angle 2 = 120 \degree }}[/tex]

Answer:

y=-4x+7

Step-by-step explanation:

Test all the values of x given and compare the value of y as shown.

when x=-3

y=19

y=-4*-3+7=19√

when x=-2

y=15

y=-4*-2+7=15√

when x=-1

y=11

y=-4*-1+7=11√

when x=0

y=7

y=-4*0+7=7√

when x=1

y=3

y=-4*1+7=3√

Now you can give the kind person who was able to answer your problem! :)

x> 1

i hope it helps you ❤️❤️❤️

Answer:

Below in bold.

Step-by-step explanation:

1/t + 3/t + 5/t +  ...+  t-1/t

This is an arithmetic series in which the common difference is 2/t.

a) The number of terms = [ (last term - first term) / common difference] + 1

=  [(t-1)/t - 1/t) / 2/t]  + 1

= (t - 2)/t * t/2 + 1

= (t -2)/2 + 1

= (t-2) / 2 + 2/2

= t/2.

b). Sum of the series (n/2)(a + l)  where a = first term , n = number of terms and l = last term, so

Sum = (t/2)/2 ( 1/t + (t-1)/t)

= t/4 * 1

= t/4.

c). (1/4+3/4 )+ (1/6+3/6+5/6 )+( 1/8+3/8+5/8+7/8) +...+(1/50+3/50+5/50+49/50)​

Using the results from a) and b):

The sum = 4/4  + 6/4 + 8/4 + ......+ 50/4.

= 1 + 1.5 + 2 +...... + 12.5

This is an AS  with common difference = 0.5,

Number of terms = [(12.5 -1) / 0.5] + 1

= 23 + 1

= 24, so

Sum = (24/2)(1 + 12.5)

=  12  * 13.5

=  162.

The number of terms is t/2, and the sum of the series is 1/2 - (t - 2)/4

In an arithmetic sequence, the common difference is the difference between successive terms.

a) From the sequence:

a = 1/t; d = (3/t) - (1/t) = 2/t

The number of terms is:

(t - 1)/t = 1/t + (n - 1)(2/t)

t - 1 = 1 + 2(n - 1)

t = 2n

n = t/2

b) The sum of the series is:

S = (n/2)[2a + (n - 1)d]

S = (t/2/2)[2(1/t) + (t/2 - 1)(2/t)]

S = (t/4)[2/t - (t - 2)/t]

S = 1/2 - (t - 2)/4

The number of terms is t/2, and the sum of the series is 1/2 - (t - 2)/4

Find out more on arithmetic sequence at: https://brainly.com/question/6561461

Answer:

-8/5

Step-by-step explanation:

slope is rise over run. it's going down so it's negative. therefore, -8 over 5 is -8/5

Answer:

slope = -8/5

Step-by-step explanation:

slope =( -4-4)/(4-(-1)

= -8/5

Answer:

32 miles

Step-by-step explanation:

Given data

Let the total distance be x miles

Marks speed= 16miles per hour

Trisha's speed= 12 miles per hour

Trisha has covered 8 miles and has  (x-8) miles to finish line

We know that

Speed= distance/time

time= distance/speed

Hence the time taken for Mark to finish is

time= x/16---------------1

The time taken for Trisha to finish is

time= (x-8)/12-----------2

equate 1 and 2 above

x/16= (x-8)/12

cross multiply

16(x-8)= 12*x

16x-128= 12x

collect like terms

16x-12x= 128

4x=128

x= 128/4

x= 32 miles

Hence they will meet at exactly 32 miles along the way

Answer:

Answer b

Step-by-step explanation:

Mark brainliest

The answer is H-16! Hope this helps! :-)

Answer:

F:64

Step-by-step explanation:

64 divided by 4 is 16.

Answer: 10 ft

Step-by-step explanation:

[tex]\frac{5in}{16ft} = \frac{3in}{x}[/tex]

Cross multiply

5x = 48

x = 9.6

9.6 ft rounded to the nearest foot is 10

Answer:

3

Step-by-step explanation:

The value of the expression  [tex]3\frac{1}{8}[/tex] + [tex]1\frac{2}{3}[/tex] ÷ 2/3 × 5/12 is 17.25 and value of  [tex]1\frac{1}{4} +2\frac{1}{2} -1\frac{3}{4}[/tex] is 2.

A fraction represents a part of a whole.

The given expression is [tex]3\frac{1}{8}[/tex] + [tex]1\frac{2}{3}[/tex] ÷ 2/3 × 5/12

( [tex]3\frac{1}{8}[/tex] + [tex]1\frac{2}{3}[/tex])/2/3× 5/12

(25/8+5/3)/(10/36)

(75+40/24)/(5/18)

115/24×18/5

2070/120

17.25

Now  [tex]1\frac{1}{4} +2\frac{1}{2} -1\frac{3}{4}[/tex]

Convert mixed fraction to improper fraction

5/4+5/2-7/4

LCM of 4, 2 is 4

(5+10-7)/4

8/4

We get 2

Hence, the value of the expression  [tex]3\frac{1}{8}[/tex] + [tex]1\frac{2}{3}[/tex] ÷ 2/3 × 5/12 is 17.25 and value of  [tex]1\frac{1}{4} +2\frac{1}{2} -1\frac{3}{4}[/tex] is 2.

To learn more on Fractions click:

https://brainly.com/question/10354322

#SPJ2

Answer:

Zero Property of Addition

Step-by-step explanation:

Click the heart button, will you?

Answer:

Additive Identity Property

Answer:

Therefore eating sea animals meat and meats with lower levels of marbling is mostly beneficial for health.

answer overall

3.3

Step-by-step explanation: sample a is 2.9 sample b is 3.5 sample c is 3.2 sample d is 3.6

overall its 3.3

I don't  know about the range so sorry

Answer:

110.

Step-by-step explanation:

Count 3 digits from the beginning - this gives 5.

Because this is 5 we round up the second digit so 0 becomes 1 , and the 5 becomes zero,

The answer is 110.

Answer:

X=7

Step-by-step explanation:

2(x+1)=16

Divide by 2 both sides

X+1=16/2

16 divide by 2 is 8

X+1=8

Subtract 1 from both sides

X=8-1

X=7

Answer: 250m2

Step-by-step explanation: You multiply 10 x 5 x 5 = 250

Answer:

A)90/100 x 500

C) C.0.90 x 500

Step-by-step explanation:

You can't with B since 90/10 doesn't account for percentage

Brainliest pls

Answer:

$9/12=$0.75 per song

Step-by-step explanation:

9/12=0.75

Answer:

12÷$9

answer is 1.33333333333333333. 3 goes on so many times