All categories

2 years ago

If Ronaldo scored 78 out of 90 in his test, what percentage did he get?

Mathematics

2 answers:

denpristay [2]2 years ago

6 0

Answer:

86.67%

Step-by-step explanation:

\frac{100\%}{x\%}=\frac{90}{78}

Take the inverse/reciprocal:

\frac{x\%}{100\%}=\frac{78}{90}

x=86.67%

Hope this helps!

nignag [31]2 years ago

6 0

Answer:

86.67%

Step-by-step explanation:

You might be interested in

Con

mr Goodwill [35]

Answer:

The coordinates of E are $E(x,y) = \left(\frac{9}{2}, 0 \right)$ .

Step-by-step explanation:

The triangle ABC represents a right triangle as both sides AB and AC are orthogonal to each other. The side AB is in the y axis, whereas the side AC is in the x axis. The triangle is dilated with respect to the origin, in which point A is set.

Vectorially speaking, dilation is defined by the following operation:

$P'(x,y) = O(x,y) + k\cdot [P(x,y) - O(x,y)]$ (1)

Where:

$O(x,y)$ - Point of reference.

$P(x,y)$ - Original point.

$P'(x,y)$ - Dilated point.

$k$ - Dilation factor.

By applying this operation, point B becomes point D:

$B(x,y) = (0,4)$ , $D(x,y) = (0,6)$

$D(x,y) = (0,0) + k\cdot [(0,4)- (0,0)]$

$D(x,y) = (0,0) + k\cdot (0,4)$

$(0,6) = (0,0) +(0,4\cdot k)$

$(0, 6) = (0,4\cdot k)$

$k = \frac{3}{2}$

Lastly, we transform point C into point E by applying the same operation: $C(x,y) = (3, 0)$ , $O(x,y) = (0,0)$ and $k = \frac{3}{2}$

$E(x,y) = (0,0) + \frac{3}{2}\cdot [(3,0)-(0,0)]$

$E(x,y) = \left(\frac{9}{2}, 0 \right)$

The coordinates of E are $E(x,y) = \left(\frac{9}{2}, 0 \right)$ .

8 0

3 years ago

If a² + b² = z and ab = y, which of the following is equivalent to 4z + 8y? Show all the steps.

Ivenika [448]

Answer:

The answer to your question is: (2a + 2b)²

Step-by-step explanation:

a² + b² = z

ab = y

Which is equivalent to 4z + 8y ?

Substitution

4(a² + b²) + 8(ab)

Simplify 4a² + 4b² + 8ab

Order 4a² + 8ab + 4b² It's a perfect square trynomial

Factorize (2a + 2b)²

7 0

3 years ago

Read 2 more answers

How many pounds of $2.4/lb trail mix should a grocer combine with 5 lb of $1.5/lb trail mix to get $1.9/lb trail mix?

user100 [1]

4
1.5x5=7.5 + (2.4 x 4)
/9
=1.9

8 0

2 years ago

What is the solution to the system of equations?

r-ruslan [8.4K]

Answer:

(4, –2, 1)

Step-by-step explanation:

You have to put in it the calculate and solve the matrix way

6 0

3 years ago

How can I solve the Jose moped question because I am confused?

lana [24]

Answer:

BRuh just send jose to the cleaners

Step-by-step explanation:

3 0

3 years ago

If Ronaldo scored 78 out of 90 in his test, what percentage did he get?​

If Ronaldo scored 78 out of 90 in his test, what percentage did he get?