1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elanso [62]
3 years ago
7

Measure (7x+1) (2x+1)

Mathematics
2 answers:
Temka [501]3 years ago
7 0

Answer:

-7 the mesaures. of the smaller

Gemiola [76]3 years ago
4 0

Smaller angle = 41°

Larger angle = 139°

Step-by-step explanation:

(7x - 1) + (2x + 1) = 180

7x + 2x - 1 + 1 = 180

9x = 180

x = 20

  • The measure of the smaller angle is

2x + 1

= 2(20) + 1

= 40 + 1

<u>= 41°</u>

  • The measure of the larger angle is

7x - 1

= 7(20) - 1

= 140 - 1

<u>= 139°</u>

You might be interested in
6th grade math I mark as brainliest
HACTEHA [7]

Answer:

True!

Step-by-step explanation:

Distributive property

5 0
3 years ago
Read 2 more answers
The equation h(t) = -16t² + 80t + 64 represented the height, in feet, of a potato t seconds after it has been launched.
Lyrx [107]

Answer:

Part A) The potato hit the ground at t=5.70 seconds (see the explanation)

Part B) The potato is 40 feet off the ground at the time t=5.28 seconds (see the explanation)

Step-by-step explanation:

we have

h(t)=-16t^2+80t+64

where

h(t) is the height of a potato in feet

t is the time in seconds

Part A)  Write an equation that can be solved to find when the potato hits the ground. Then solve the equation

we know that

When the potato hit the ground, the value of h(t) must be equal to zero

so

For h(t)=0

-16t^2+80t+64=0

Solve the quadratic equation

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

-16t^2+80t+64=0

so

a=-16\\b=80\\c=64

substitute in the formula

t=\frac{-80\pm\sqrt{80^{2}-4(-16)(64)}} {2(-16)}

t=\frac{-80\pm\sqrt{10,496}} {-32}

t=\frac{-80+\sqrt{10,496}} {-32}=-0.70

t=\frac{-80-\sqrt{10,496}} {-32}=5.70

therefore

The potato hit the ground at t=5.70 seconds

Part B) Write an equation that can be solved to find when the potato is 40 feet off the ground. Then solve the equation

For h(t)=40 ft

substitute in the quadratic equation

-16t^2+80t+64=40

-16t^2+80t+24=0

Solve the quadratic equation

we have

a=-16\\b=80\\c=24

substitute in the formula

t=\frac{-80\pm\sqrt{80^{2}-4(-16)(24)}} {2(-16)}

t=\frac{-80\pm\sqrt{7,936}} {-32}

t=\frac{-80+\sqrt{7,936}} {-32}=-0.28

t=\frac{-80-\sqrt{7,936}} {-32}=5.28

therefore

The potato is 40 feet off the ground at the time t=5.28 seconds

3 0
3 years ago
A pencil factory makes 50 cases of pencils in 5 hours.
Oduvanchick [21]


If a pencil factory makes 50 cases of pencils in 5 hours. Let's first find out how many cases are made per hour.

50 ÷  5 = 10 cases per hour

Now you need to know how long it will take to make 55 cases. Since we already know that it takes 5 hours to make 50 cases. So you need to know how many cases for the extra 5 cases. If it takes 1 hour to make 10 cases, it would only take 1/2 hour to make 5 cases.

So it would take 5 1/2 hours to make 55 cases.

Hope this helps. :)

5 0
3 years ago
Factor the expression: -3r - 15
iren2701 [21]

Answer:

-3(r+5)

Step-by-step explanation:

............

.

5 0
3 years ago
Read 2 more answers
Pietro buys 20 candy bars for $6 he plans to sell all 20 candy bars in 1 day he need to make a profit of $10 per day to meet his
iren [92.7K]
He would have to charge 80 cents per candy bar!
5 0
3 years ago
Other questions:
  • Michelle went on a hike the trail at 6:45 AM and she returned at 3:20 PM along with the train hike
    14·1 answer
  • If sin Theta = 8/17 and Theta is in quadrant 2, then cot = _____. If necessary, use the slash mark ( / ) for a fraction bar.
    10·2 answers
  • What is the answer to the first one? pls help
    6·2 answers
  • Is slope undefined when both numerator and denominator is negative?
    13·1 answer
  • Please walk me through the process of solving for the area of this triangle (round to nearest tenth) Thanks!!
    5·1 answer
  • A relay with n laps was run by 4 people. The 1st runner ran half the laps. The 2nd runner ran half the number of laps the 1st ru
    8·1 answer
  • Pls help, due soon!!
    9·2 answers
  • Someone help me plz!!!
    10·1 answer
  • For parties of six or more, a restaurant adds a 20% gratuity (or tip). If a
    12·1 answer
  • Can someone please answer a-d I have 5 mins!!!!<br> 6 points and Brainly:)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!