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zvonat [6]
3 years ago
9

2d+4=10+2.5d Help Me

Mathematics
1 answer:
sergiy2304 [10]3 years ago
6 0
Subtract 2d from both sides

simplify 10 + 2.5d - 2d to 10 + 0.5d

subtract 10 from both sides

simplify 4 - 10 to -6

divide both sides by 0.5

simplify 6/0.5 to 12

switch the sides

Answer: d = -12.
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suppose the leftmost digits of two numbers are eight and three can you tell which number is greater explain
tekilochka [14]
No because you don't know how many places are in the number
ex:843 and 3257
there are 4 places in 3257 and only 3 places in 843
3 0
3 years ago
A ratio of the number of boys to the number of girls in a choir is 5 to 4. There are 60 girls in the choir
Trava [24]
The ratio is 4/5 girls to boys. if there are 60 girls you would divide 60 by 4 and get 15. you would then multiply that 15 by 5 to get the number of boys in the choir. your answer would be 75 because 15x5=75. there are 75 boys in the choir
7 0
2 years ago
What is the General form of this equation?<br> (x- -1)^2 +(y-1)^2 =225.0
KATRIN_1 [288]
General Form is the most basic form of an equation and is used as a template to form equations designed to solve a specific problem.

The equation given is "<span>(x- -1)^2 +(y-1)^2 =225.0".

The general form of this Equation would be presented as 

</span>·X (+/-) Y = Z
·X^2 (+/-) Y^2 = R1
<span>
-I hope this is the answer you are looking for, feel free to post your questions here on brainly in the future.</span>
4 0
3 years ago
A promoter buys advertising in units of $30,000 each. If he buys two units of broadcast TV, one unit of cable TV, and two units
andriy [413]

Answer:

$150,000

Step-by-step explanation:

The first step is to calculate the total number of units

= 2 +1 +2

= 5

If he buys at the rate of $30,000 for one unit then the total money spent on advertising can be calculated as follows

= 30,000 × 5

= 150,000

Hence the promoter spends $150,000 on advertising

4 0
3 years ago
What is the value of b?
tresset_1 [31]

Answer:

17

Step-by-step explanation:

Using the law of cosines in ΔABC

b² = a² + c² - (2ac cosB) ← substitute in values

   = 25² + 28² - (2 × 25 × 28 × cos36.9°)

   = 625 + 784 - 1400 cos36.9°

   = 1409 - 1400 cos36.9° ( Take the square root of both sides )

b = \sqrt{1409-1400cos36.9} ≈ 17 ( nearest whole number )

   

8 0
3 years ago
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