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Rzqust [24]
2 years ago
15

Find the value of x.

Mathematics
1 answer:
svetoff [14.1K]2 years ago
3 0

Answer:

x=17 plz the brainliest!

Step-by-step explanation:

3x+39=90

3x+39-39=90-39

3x=51

\frac{3x}{3}=\frac{51}{3}

x=17

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Complete the square 4y^2+x+8y+1=0
sammy [17]

Answer: Simple and best practice solution for 4y^2+8y+1=0 equation. ... Begin completing the square. ... Square it (1) and add it to both sides.

Step-by-step explanation: Complete the square for x2+2x x 2 + 2 x.

4 0
2 years ago
At the city Museum child admission is $6.40 in adult admission is $9.70 on Sunday 149 tickets were sold for a total sales of $11
Law Incorporation [45]

Answer:

Adult=58

Step-by-step explanation:

c=child, a=adult

6.4c+9.7a=1145 equation 1

c+a=149 equation 2

a=149-c modified equation 2 to isolate a

6.4c+9.7(149-c)=1145 substitute value of a from equation 1 into equation 2

6.4c+1445.3-9.7c=1145

-3.3c=-300.3

c=91

solve for a

c+a=149

91+a=149

a=58

Check answer:

6.4c+9.7a=1145

6.4(91)+9.7(58)=1145

582.40+562.60=1145

1145=1145

8 0
3 years ago
A general contractor is constructing a building that requires a concrete foundation that is to be 35 feet by 12 feet and 3 inche
inessss [21]
First we need to calculate the volume which is Base*depth or length*width*depth
first we have to change all the units so they are the same, 3 inches in this case will equal 1/4feet
multiply all the numbers together
35ft*12ft*1/4foot= 105 cubic feet
however the problem says the cost per cubic *yards*
so take the 105 cubic feet and divide by 3 (3 feet to a yard)
105/3 = 35 cubic yards
the cost of 35 cubic yards of concrete =
35*125= $4375

3 0
3 years ago
Simplify 36.3.<br> A. 35<br> B. 96<br> C. 37<br> D. 36
Elena L [17]
Answer is C.
3^6 is 3x3x3x3x3x3 and if you add another x3 then it’ll be 3^7
5 0
3 years ago
Read 2 more answers
Natalie has $20 to spend on 5 sandwiches. Can she spend $4.39 on each sandwich? Explain.
uranmaximum [27]
No she can't spend $4.39 for each sandwich because if you divide 20 by 5 your quotient will be 4.
6 0
3 years ago
Read 2 more answers
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