Mathematics High School

I need help with my work​

I Need Help With My Work

Answers

Answer 1

Answer:

number 6 is -8 number 7 is 9 number 8 is 25 and number 9 is -16

Related Questions

what did he do wrong

Answers

Answer:

I think step 1 because 0.5m + 6 does not equal 20 which messed up the solution.

I need help solving this ASAP

Answers

The answer is the letter b

A boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h. What is the boat's speed (in still water)?

Answers

Answer:

A)63miles per hour.

B)27 miles per hour

Step-by-step explanation:

HERE IS THE COMPLETE QUESTION

boat on a river travels downstream between two points, 90 mi apart, in 1 h. The return trip against the current takes 2 1 2 h. What is the boat's speed (in still water)??b) How fast does the current in the river flow?

Let the speed of boat in still water = V(boat)

speed of current=V(current)

To calculate speed of boat downstream, we add speed of boat in still water and speed of current. This can be expressed as

[V(boat) +V(current)]

It was stated that it takes 1hour for the

boat to travels between two points of 90 mi apart downstream.

To calculate speed of boat against current, we will substact speed of current from speed of boat in still water. This can be expressed as

[V(boat) - V(current)]

and it was stated that it takes 2 1/2 for return trip against the Current

But we know but Speed= distance/time

Then if we input the stated values we have

V(boat) + V(current)]= 90/1 ---------eqn(1)

V(boat) - V(current) = 90/2.5----------eqn(2)

Adding the equations we have

V(boat) + V(current) + [V(boat) - V(current)]= 90/2.5 + 90/1

V(boat) + V(current) + V(boat) - V(current)]=90+36

2V(boat)= 126

V(boat)=63miles per hour.

Hence, Therefore, the speed of boat in still water is 63 miles per hour.

?b) How fast does the current in the river flow?

the speed of the current in the river, we can be calculated if we input V(boat)=63miles per hour. Into eqn(1)

V(boat) + V(current)]= 90/1

63+V(current)=90

V(current)= 27 miles per hour

Hence,Therefore, the speed of current is 27 miles per hour.

16-2<5
solveeeeee itttttt​

Answers

[tex]b-2<5\\b<5+2\\b<7[/tex]

Therefore, the answer is b < 7.

-14,-12,-10,-8,-6 what sequence is it.

Answers

arithmetic sequence

Step-by-step explanation:

Answer:

+2

Step-by-step explanation:

The numbers are increasing by 2 every time

If there are 800 students and 17/50 wear a green shirt, how many students are wearing a green shirt?

Answers

Answer: 272 students are wearing a green shirt.

Step-by-step explanation:

800/50 = 16

16*17 = 272

a ship moved 16 miles east, 21 miles west and 7 miles west where is the ship

Answers

Answer:

The ship is 12 miles west from where it started.

help again please thank you!

Answers

2 one I think f//said

A customer purchased a total of 10 hats and scarves. Each hat cost $4.50 and each scarf cost $3.00. The customer spent $36.00 all together.

How many hats did the customer buy?

Enter your answer in the box.

hats

Answers

Answer:

4.8

Step-by-step explanation:

4.50 + 3.00 = 7.5

36.00 divided by 7.5 = 4.8

System of equations
(h + s = 10)3
4.50h + 3s = 36.00
3h + 3s = 30
Subtract
1.5h = 6, h = 4
The customer brought 4 hats

y=2,y=-1/2 thats the equation but it told me to write more idk why

Answers

More information is needed.

6th grade math help me plzz

Answers

Answer:

A-B really simple.

Step-by-step explanation:

A 20 meter long cable is used to support a telephone, holding it perpendicular to the ground. If the cable forms a 60 degree angle with the ground, how high up the pole should the cable be attached?

Answers

A wire to be attached to support a telephone pole. Because of surrounding buildings, sidewalks and roadways, the wire must be anchored exactly 21 feet from the base of the pole. Telephone company workers have only 28 feet of cable, and 2 feet of that must

please helppppppppp!!!!

Answers

I can’t see the picture clearly , please retake a picture

plz help me find the answer!

Answers

Answer:

x=50°

Angle at A=108°

Step-by-step explanation:

If the triangle ABC is isosceles,then <ABC=<ACB=65°

We can now use angle properties to find <BAC

<BAC+65+65=180°

<BAC=180°-130=50°

Since line AB and CD are parallel,line AC is a transversal line which means <BAC=<ACD=x=50°

Therefore x=50°

For the parallelogram,

opposite interior angles are equal so <BAD=<BCD and <ABC=<ADC

3x+3x+2x+2x=360°

10x=360°

x=360°/10=36°

The angle at a=3x=3×36°=108°

Find the answer, please!!​

Answers

X=7 is the answer and you just plug that in! Both answers should be 54°

A median of a triangle always bisects the angle of the triangle that it intersects. true or false

Answers

Answer: True

Step-by-step explanation: Every triangle has exactly three medians, one from each vertex, and they all intersect each other at the triangle's centroid. In the case of isosceles and equilateral triangles, a median bisects any angle at a vertex whose two adjacent sides are equal in length. The concept of a median extends to tetrahedra.

Answer:

True

Step-by-step explanation:

Ramon places a mirror on the ground 45 ft from the base of a geyser. He walks backwards until he can see the top of the geyser in the middle of the mirror. at that point, Ramon eyes are 6 ft above the ground and he is 7.5 ft from the mirror. Use similar triangles to find the geyser

Answers

Answer:

36 ft

Step-by-step explanation:

6/x=7.5/45

270=7.5x

x=36

In this exercise we have to have knowledge of triangles, so we can use the theory of similar triangles to find the value of X, like:

[tex]36 ft[/tex]

To use similar triangle theory, we have to make a rule of 3, that is:

[tex]6/x=7.5/45\\270=7.5x\\x=36[/tex]

See more about triangles at brainly.com/question/10951564

The adult height of a man is about 1.19 times his height at age 12. Miguel is 1.5 m tall at 12 years of age. What would his predicted height be as an adult?

Answers

Answer: 3.285?

I just multiplied 1.5 and 1.19, then added the product and his height at the age of 12 so, therefore i got 3.285 as a answer

which describes the correlation shown in the scatter plot?

a. there is a positive correlation in the data set.
b. there is a negative correlation in the data set.
c. there is no correlation in the data set.
d. more points are needed to determine the correlation.

Answers

Answer:

B

Step-by-step explanation:

Write the expression in simpliest form WILL MARK BRAINLIEST
8 ( -3x + 2)

Answers

−24x+16

Hope this helps!

Answer:

-24× + 16

Step-by-step explanation:

hope this helps :D

Solve for all values of x by factoring.
x^2– 25 = 0

Answers

Answer:

Step-by-step explanation:

a²-b²=(a+b)(a-b)

x²-25=0

x²-5²=0

(x+5)(x-5)=0

x=-5,5

Solve for t.
7+ 4t 5t + 17
=
t =

Answers

Answer:

t = -3

Step-by-step explanation:

Simplify  7+4t+5t+177+4t+5t+17  to  24+9t24+9t.

24+9t=t

24+9t=t

2 Subtract 9t9t from both sides.

24=t-9t

24=t−9t

3 Simplify  t-9tt−9t  to  -8t−8t.

24=-8t

24=−8t

4 Divide both sides by -8−8.

-\frac{24}{8}=t

−

8

24

​

=t

5 Simplify  \frac{24}{8}

8

24

​

  to  33.

-3=t

−3=t

6 Switch sides.

t=-3

t=−3

Uma tecelagem fabrica 2000 metros de comprimento de tecido com 2 metros de largura em uma semana, com 4 teares funcionando 8 horas por dia cada. Se duas máquinas forem desligadas, em quanto tempo ela fabricará 1500 metros de comprimento de tecido com 3 metros de largura e com as máquinas trabalhando 6 horas por dia cada?

A
15 dias


B
18 dias


C
21 dias


D
28 dias

Answers

the answer is b. 18 días

An item is regularly priced at %59 . It is on sale for 35% off the regular price. what is the sales price

Answers

Answer: 38.35%

Step-by-step explanation:

59%=59/100=0.59

0.59-0.35(0.59)=

0.59-0.2065=

0.5900-0.2065=

0.3835=38.35%

The price would be $26.55

Write an equation of the line that passes through (18, 2) and is parallel to the line 3y−x=−12

Answers

Answer:

[tex]y = \frac{x}{3} - 4[/tex]  

I hope this helps!

Question 10 PLEASE HELP FAST ILL GOVE BRAINLIST AND EXTRA POINTS MAKE SURE YOU EXPLAIN YOURSELF

Answers

Answer:

D

Step-by-step explanation:

Hope this helps!! :D thanks!!

Answer:

D

Step-by-step explanation:

The difference between a number and 8 is less than -15

Answers

Answer:

x-8<-15

Step-by-step explanation:

Ahmad rented a truck for one day. There was a base fee of $17.99, and there was an additional charge of 88 cents for each mile driven. Ahmad had to pay
$144.71 when he returned the truck. For how many miles did he drive the truck?
mile.

Answers

Answer:

266 miles

Step-by-step explanation:

(244.09-17.99)/0.85=266

HELP!!!!!!!!!!GIVING BRAINLIEST-For each diagram, state the relationship between the angles indicated and then find the measure of <1.

Answers

Answer:

a. corresponding angles

b. alternate interior angles

c. opposite angles

d. cointerior angles

a. = 127

b. = 65

c. = 179

d. 180-41= 139

5 - (x + 1) = 5x + 4

Answers

Answer:

x=0

Step-by-step explanation:

Other Questions
Why do natural resources make difference in a communities ? help pleaseeeeeeeeeee He kicked the ball." The noun "ball" is the_____________________ The United States stops all trade with another country because of that country's flagrant civil rights violations. This action is an example of U.S. a. diplomacy. b. domestic policy.c. foreign policy.d. gerrymandering. Cuantos minutos hay en 4 horas 3x = y and x - 2y = 10 certain disease has an incidence rate of 0.1%. if the false negative rate is 8% and the false positive rate is 1%, compute the probability that a person who tests positive actually has the disease. Which of the following best explains the difference between short-term and long term planning? Cameron flies directly west for 13 km, then turns to the south and flies for another 30 km. He then flies east for 13 km before landing at the airport. An English student picked up a soccer ball in 1823 and ran with it, he broke all the rules of an Ancient Greek game, harpaston. Who was this student? List 3 properties of the hairs cuticle. A square has a perimeter of 20x + 36. Write a simplified expression for the side length of the square. Question 1 of 10Which algebraic expression represents this phrase?the product of 40 and the distance to the finish lineOA. 40-dOB. 40+ dOC. 40-dD. 4000 A new concrete courtyard will be 15' by 25' and will be filled to a depth of 3" (1/4 foot.) How many cubic yards, rounded to the nearest tenth, of concrete do you need? Kendra rides her bike to school each day. It takes her 10 minutes to ride 30 blocks. What unit rate would express the speed of Kendra's bike ride? 2 blocks per minute 3 blocks per minute 4 blocks per minute 10 blocks per minute pleaseeee hhhhhhhhhhhhheeeeeeeeeeeeellllllllllllppppppppppppppp i will vote brainiest "A student measures the length of a rectangularposter to the nearest centimeter and finds thatthe length is 75 cm. Another student measuresthe poster's width to the nearest tenth of acentimeter and finds that the width is 50.3 cm.How should the students report the area of theposter using the correct number of significantdigits?" how to get a fever in an hour or less(other then the onion/garlic trick I tried it and it didn't work)ASAP I'll mark branliest are video games good? i think they are write 3 sentence of why they are -2=-2/3x write in standard form pls answer quick