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
Lady_Fox [76]
3 years ago
7

Find the value of b if side a measures 8.7 cm?

Mathematics
1 answer:
Shkiper50 [21]3 years ago
6 0

Answer:

The correct equation is 8.7 + b = 54.6

Step-by-step explanation:

because it is given that measure of side a is 8.7cm, in all other equations the values of a is different.

You might be interested in
What is 4,000+100+80+5 in word form?​
Sphinxa [80]

Answer:

Step-by-step explanation:

it is four thousand one hundred eighty five

6 0
3 years ago
Read 2 more answers
Mary wants to make 20 gallons of a 52% acid solution by mixing together a 84% acid solution and a 4% acid solution. How much of
Setler [38]

Answer:

  • 12 gallons 84%
  • 8 gallons 4%

Step-by-step explanation:

I like to use an "X-diagram" to solve mixture problems. On the left side are the constituents of the mix; in the middle is the result of the mix; and on the right side are the differences between the numbers on each diagonal. These differences are the ratio numbers for the mix.

Here, that means the ratio of 84% solution to 4% solution is ...

  48 : 32 = 12 : 8

Note that the last two "ratio numbers" were chosen so their sum is 20, hence they represent the number of gallons of the corresponding constituent in the mix. (The sum of the first two ratio numbers is 48+32=80, so to get a sum of 20, we divide each by 4.)

Mary must use ...

  • 12 gallons of 84% acid solution
  • 8 gallons of 4% acid solution

You may note that this solution takes much longer to explain than to do. The math here can all be done without a calculator.

_____

<em>Check</em>

12 × 84% + 8 × 4% = 10.40 = 20 × 52%

_____

<em>Usual Solution</em>

A more conventional approach would be to assign x to the amount of 84% solution needed. Then the number of gallons of acid in the mix is ...

  0.84x + 0.04(20 -x) = 0.52(20)

  0.80x + 0.8 = 10.4 . . . . simplify

  0.80x = 9.6 . . . . . . . . . . subtract 0.8; next, divide by 0.8

  x = 9.6/0.8 = 12 . . . . gallons of 84% acid

  20-x = 8 . . . . . . . . . . gallons of 4% acid

3 0
3 years ago
What is the value of y when x = 5 in the equation y = 5x?
kiruha [24]
Y = 5x

x = 5

y = 5(5)

y = 25
4 0
3 years ago
Someone please help ASAP!!!
WITCHER [35]

Answer:

I'm here, what do you need help with?

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
In the last race , the first car in the pit used 1 3/4 tanks of gas, the second car used 2 1/8 and the third car used 1 1/2 tank
riadik2000 [5.3K]

Answer: -5\frac{3}{8} tanks of gas


Step-by-step explanation:

Let the x be the number of tanks of gas, then

The amount of gas used by first car= 1\frac{3}{4}x=\frac{7}{4}x

The amount of gas used by second car= 2\frac{1}{8}x=\frac{17}{8}x

The amount of gas used by third car= 1\frac{1}{2}x=\frac{3}{2}x

Thus, the total change in the amount of gas for all three cars=\frac{7}{4}x+\frac{17}{8}x+\frac{3}{2}x

=x(\frac{7}{4}+\frac{17}{8}+\frac{3}{2})\\\\=x(\frac{14+17+12}{8})\\\\=x(\frac{43}{8})\\=5\frac{3}{8}x

Since, the amount of gas 5\frac{3}{8} tanks of gas is used for all three cars.

Therefore, the total amount would be negative .

hence, the answer is  -5\frac{3}{8} tanks of gas.

8 0
3 years ago
Other questions:
  • PLEASE HELP 15 POINTS WILL GIVE BRAINLIEST The following formula, F = ma, relates three quantities: Force (F), mass (m), and acc
    13·1 answer
  • Four more than a number is more than thirteen write inequality
    7·1 answer
  • If tan⁡ x= root of 3, and 180°
    13·1 answer
  • Can someone answer this question for me pleas?
    9·1 answer
  • The opposite of -a is always positive. True or false? <br>Answer it fast please!!
    13·1 answer
  • in cooking, 1 drop is equal to 1/6 of a dash. if a recipe calls for 2/3 of a dash, write an expression that would give the numbe
    14·1 answer
  • Edmond toured New York City with his family. They started their tour at 3:05 P.M. at the Empire State Building, where they spent
    5·2 answers
  • The equations y=x22−8 and y=2x−2 are graphed below. What are the solutions to the equation x22−8=2x−2?
    6·1 answer
  • Which equation has a graph that lies entirely above the x-axis?
    12·2 answers
  • Who wants points for now work just put any answer
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!