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iren2701 [21]
3 years ago
9

2D - 5F = 30 Solve for F

Mathematics
2 answers:
AleksAgata [21]3 years ago
8 0

Answer:

f= ∞

Step-by-step explanation:

2d-5f=30\\2d=30+5f\\\\30+5f-5f=30\\30+5f=30+5f

f= ∞

Allushta [10]3 years ago
5 0

Answer:

F = -6 + 2d/5

Step-by-step explanation:

2d-5f=30

subract 2D from each side

-5f=30-2d

divide both sides by -5

f= -6 +2d/5

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Math. answer plz ty❤️.
maxonik [38]

Answer:

Robert is 10  and his dad is 40 years old

Step-by-step explanation:

We have (4x+5)=3(x+5)

4x+5=3x+15

x=10.

Roberts is 10 years old and his father is 40 years old.

3 0
3 years ago
Read 2 more answers
Round to the nearest ten thousand 905154
kolbaska11 [484]
You want to round 905,154 to the nearest ten-thousands place. The ten-thousands place in your number is shown by the bold underlined digit here:

9<em><u>0</u></em>5,154

    To round 905,154 to the nearest ten-thousands place...

    The digit in the ten-thousands place in your number is the 0. To begin the rounding, look at the digit one place to the right of the 0, or the 5, which is in the thousands place.

    Since the 5 is greater than or equal to 5, we'll round our number up by

        Adding 1 to the 0 in the ten-thousands place, making it a 1.

    and by changing all digits to the right of this new 1 into zeros.

The result is: 910,000.

So, 905,154 rounded to the ten-thousands place is 910,000.

5 0
3 years ago
10. Amina is currently twice as old as her younger brother,
maks197457 [2]

Answer:

When Amina is 18. Saad would be;

k. 14

Step-by-step explanation:

Let "x" represent Anita's current age and let "y" represent Saad's current age, we have;

Anita's age = 2 × Saad's age

Therefore;

x = 2 × y...(1)

In 4 years, we will get;

x + 4  = 1.5 × (y + 4)...(2)

Substituting the value of x in equation (1) into equation (2), we get;

2·y + 4 = 1.5·y + 1.5 × 4 = 1.5·y + 6

2·y + 4 = 1.5·y + 6

2·y - 1.5·y   = 6 - 4 = 2

0.5·y = 2

y = 2/0.5 = 4

Saad's current age = y = 4 years

From equation (1), we have;

x = 2 × y = 2 × 4 = 8

Amina's current age = x = 8 years

When Amina is 18, we have;

18 = 10 + 8 = 10 + x

Therefore, Amina would be 18 in 10 years time from now, from which we have;

Saad would be 10 years + y = 10 years + 4 years = 14 years in 10 years from now

Therefore, when Amina would be 18 years in 10 years from now Saad would be 14 years.

6 0
3 years ago
Urgent ;<br>if a^3+b^3=11 and a^3-b^3=5, evaluate a^6-b^6
11111nata11111 [884]

Factorize using the difference of squares identity.

a^6 - b^6 = \left(a^3\right)^2 - \left(b^3\right)^2 = \left(a^3 - b^3\right) \left(a^3 + b^3\right)

Then

a^6 - b^6 = 11 \cdot 5 = \boxed{55}

5 0
1 year ago
Jack has two more than half as many cups as
Rufina [12.5K]

Step-by-step explanation:

(x \div 2 + 2) +  \frac{(x \div 2 + 2)}{2}  + x

its hard to determine without the known value of x, but the above would be the equation needed to solve it if you knew what x was

4 0
3 years ago
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