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
lord [1]
3 years ago
8

Ninety-nine decreased by 4/5 of 80 is the same as 5/8 of what number?

Mathematics
2 answers:
mixer [17]3 years ago
8 0
4/5 of 80 is 64
99-64=35
35/5=7
7x8=56
Answer is 56
Marina86 [1]3 years ago
3 0
The answer is 56, hope this helps
You might be interested in
An architect wants to draw a rectangle with a diagonal of 15 centimeters. The length of the rectangle is to be 6 centimeters mor
S_A_V [24]

Answer:

She should make a rectangle with dimensions 14.4 cm by 4.2 cm.

Step-by-step explanation:

  • The diagonal of a rectangle is represented by \sqrt{length^2+width^2}.
  • Area of rectangle is = length×width
  • Perimeter of a  rectangle = 2(length+width).

Assume x be the width of the rectangle.

The length of the rectangle is to be 6 cm more than twice the width.

The length of the rectangle is= (2x+6) cm

Then the diagonal of the rectangle is \sqrt{length^2+width^2}

                                                             =\sqrt{(2x+6)^2+x^2}

                                                            =\sqrt{4x^2+24x+36+x^2}

                                                             =\sqrt{5x^2+24x+36} cm

According to the problem,

\sqrt{5x^2+24x+36}=15

Squaring both sides

\Rightarrow{5x^2+24x+36}=15^2

\Rightarrow{5x^2+24x+36}=225

\Rightarrow{5x^2+24x+36-225=0

\Rightarrow{5x^2+24x-189=0

⇒5x²+45x-21x-189=0

⇒5x(x+9)-21(x+9)=0

⇒(x+9)(5x-21)=0

⇒x+9=0  or,   5x-21=0

\Rightarrow x=-9, \frac{21}5

⇒x= -9, 4.2

Since the width of a rectangle can not negative.

So, x=4.2 cm

The width of rectangle is = 4.2 cm

The length of the rectangle is =(2×4.2+6)

                                                  =14.4 cm

She should make a rectangle with dimensions 14.4 cm by 4.2 cm.

8 0
3 years ago
A bird (B) is spotted flying 6,000 feet from a tower (T)). An observer (O) spots the top of the tower (T) at a distance of 9,000
Nina [5.8K]

Answer:

The angle will be "48.7°".

Step-by-step explanation:

In ΔTBO, the given values are:

TB = 6,000 feet

BO = 9,000 feet

Now,

To find the angle,

⇒  Cos \ B =\frac{TB}{BO}

On putting the estimated values, we get

⇒   Cos \ x=\frac{6000}{9000}

⇒   Cos \ x=0.66

⇒          x=Cos^{-1} \ 0.66

⇒          x=48.7^{\circ}    

7 0
3 years ago
Read 2 more answers
Tyler went to the State spelling bee. His school gave him $50 for travel and $30 A day for his meals. Tyler was given a total of
neonofarm [45]
A and B are the correct answers.

Hope this helps.
❤️
7 0
3 years ago
If the measure of angle 3 is 80 degrees and the measurer of angle 6 is (2x)
spin [16.1K]
Answer:
X = 40
Explanation: (2x) = 80
80/2 = 40
X = 40 degrees
5 0
2 years ago
WILL GIVE BRAINLIEST!! ASAP <br> Which of the following expressions are equivalent to 6^-3
olga_2 [115]

Answer: 1/6^3 AND 1/216

Step-by-step explanation:

A negative number always goes to the denominator to become positive.

7 0
3 years ago
Other questions:
  • 3/4x+5/6=5x-125/3 solve for x
    9·1 answer
  • Identify the vertex of the function, f(x) = 3(x - 1)2 + 5.
    15·2 answers
  • Two machines are used for filling plastic bottles with a net volume of 16.0 ounces. The filling processes can be assumed to be n
    11·1 answer
  • Three years ago, Sherman was twice as old as Clive. If Clive’s present age is c, which expression represents Sherman’s present a
    14·1 answer
  • On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip, the average speed
    12·1 answer
  • Please help mereeeeeeeeeeeeee
    5·1 answer
  • How much wood could a woodpecker peck if a woodpecker could peck wood? (this is a legitimate question on my homework)​
    10·1 answer
  • The Cumulative number (in thousands) of deaths from a certain disease from 2000 to 2010 may be modeled by A=2.39x2+5.04x+5.1, wh
    13·1 answer
  • What is a-6=8-(9+a) solved?
    5·1 answer
  • Which I greater? 165 cm or 1.7 meters?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!