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Alex787 [66]
3 years ago
14

Plz help em this is so hard i will give you brilest

Mathematics
1 answer:
NISA [10]3 years ago
8 0

Answer:

answer is 4.15

Step-by-step explanation:

you just add the numbers its no different than a normal addition problem for the most part.

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A racehorse weighs 490 kilograms. How much does it weigh in grams?
mrs_skeptik [129]

Answer:

490,000 grams

Step-by-step explanation:

To convert from kilograms to grams - multiply the number of kilograms by 1000. (there are 1000 grams in a kilogram)

490 * 1000 = 490,000

7 0
2 years ago
Read 2 more answers
Hey, can anyone help me with this? Okay, so in the equation 10 + 3x= -17 . The answer or (x) = -9 because you minus 10 on both s
Delvig [45]

Answer:

You do -17 + -10 inorder to change the operation used because both negatives does not mathematically look nice.

Step-by-step explanation:

To isolate the unknown, we need to move all the numbers on one side of the equal sign and all the unknow variables on one side.

Here we move 10 on the other side by taking away 10 both sides

10 + 3x = -17

-10 -10

then we are left with only 3x on one side and -27 on the other side because -17 - -10 = -27 , in this case it is acknowledge to change the operation from minus to add because the two minus are together, so we say -17 + -10 .

3x = -27

/3 /3

x = -9

6 0
4 years ago
A road sign is in the shape of an equilateral triangle with a vertical measurement of 41.2cm. How long is each side?
shusha [124]
H=(√3)*a/2 = 41.2

So, a=2*41.2/√3=47.6
3 0
3 years ago
23.78 to 1 decimal place
fomenos

Answer:

23.8

Step-by-step explanation:

4 0
3 years ago
Sophia has an ear infection. The doctor prescribes a course of antibiotics. Sophia is told to take 500 mg doses of the antibioti
olganol [36]

Answer:

Dosage= 500 mg

Frequency= twice a day (every 12 hours)

Duration= 10 days

Number of dosage= 10*2= 20

residual drug amount after each dosage= 4.5%

We can build an equation to calculate residual drug amount:

  • d= 500*(4.5/100)*t= 22.5t, where d- is residual drug, t is number of dosage
  • After first dose residual drug amount is: d= 500*0.045= 22.5 mg
  • After second dose: d= 22.5*2= 45 mg

As per the equation, the higher the t, the greater the residual drug amount in the body.

Maximum drug will be in the body:

  • d= 20*22.5= 450 mg at the end of 10 days

Maximum drug will be in the body right after the last dose, when the amount will be:

  • 500+19*22.5= 927.5 mg
6 0
4 years ago
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