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Viefleur [7K]
3 years ago
8

Solve for a. 7a + 18 = 102 a =

Mathematics
2 answers:
Virty [35]3 years ago
6 0

Answer:

12

Step-by-step explanation:

Inessa [10]3 years ago
3 0
7a+18=102
7a= 102-18
7a= 84
a = 84/7= 12
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4/5G + 42 = 2.8G + 18<br> Plz solve with an explanation
inysia [295]

Answer:

12

Step-by-step explanation:

Simplify  \frac{4}{5}G

​5

​

​4

​​ G  to  \frac{4G}{5}

​5

​

​4G

​​ .

\frac{4G}{5}+42=2.8G+18

​5

​

​4G

​​ +42=2.8G+18

Multiply both sides by 5.

4g + 210 = 14g + 90

Simplify  

 14G + 90 - 4G to 10G + 90

Subtract 90 from both sides.

210-90=10G210−90=10G

Simplify  210-90210−90  to  120120.

120=10G120=10G

Divide both sides by 1010.

\frac{120}{10}=G

​10

​

​120

​​ =G

Simplify  \frac{120}{10}

​10

​

​120

​​   to  1212.

12=G12=G

Switch sides.

G=12G=12

SORRY ABOUT ALL THIS WORK...

3 0
3 years ago
Read 2 more answers
12 is 80% of what number
nydimaria [60]
X - the number

80\%x=12 \\&#10;\frac{80}{100}x=12 \\&#10;\frac{4}{5}x=12 \\&#10;x=12 \times \frac{5}{4} \\&#10;x=3 \times 5 \\&#10;x=15

12 is 80% of 15.
3 0
3 years ago
Read 2 more answers
Which figures are polygons
alexira [117]

<em><u>Polygon:</u></em> a figure formed by coplanar segments

with one distinct interior region

Figure A, Figure B, and Figure D would be considered polygons.

Notice that those figures I mentioned above are

composed of line segments, and nothing else.

In addition, these figures don't have two separate

interior regions and figures that do aren't polygons.

Figure C would not be a polygon because

it's formed by a curve rather than line segments.

4 0
3 years ago
A physician orders penicillin 525,000 units q4h for a child who weighs 55 lbs. The recommended dosage is 100,000 250,000 units/k
Nitella [24]

Answer:

a. 24.9476 Kg.

b. The safe daily dosage range is between 2494760 units /day and 6236900 units/day

c. Yes

Step-by-step explanation:

a. Lets see the convertion from lb to Kg:

  • 1 Lb= 0.453592
  • 55 lb = 0.453592*55= 24.9476 kg

b. Minimum daily dosage is 100,000 units /kg

  • For this kid: 100,000 * 24.9476= 2,494,760 units/ day
  • in 6 dosis; 2494760/6= 415,793.33 units every 4 hours

Maximun daily dosage is 250,000 units /kg

  • For this kid: 250,000 * 24.9476= 6,236,900 units/ day
  • in 6 dosis; 6,236,900/6= 1,039,483.33 units every 4 hours

c: Yes, because 525.000 units every 4 hours is between the minimun and maximun dosaje for this kid

4 0
3 years ago
HELP ME ANSWER THIS PLZ!!!!!!
alukav5142 [94]

Answer:

25% off $60 = $15

15% off $60 = $9 - 10%= $0.90

Step-by-step explanation:

$60 divided by 4= 25 x 4 = 100 is the whole number

6 0
3 years ago
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