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2 years ago

Matthew is four years younger than his brother Kevin,when Matthew was 7,how old was his brother

Mathematics

2 answers:

cestrela7 [59]2 years ago

8 0

Answer:

Kevin was eleven years old.

Step-by-step explanation:

7+4=11, since the question says Matthew is younger by four years.

natulia [17]2 years ago

6 0

Kevin will be 11 years old

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Solve using foil method (x+9)(x+9)

Fudgin [204]

X^2+9x+9x+81
x^2+18x+81
for factoring it

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3 years ago

4. He drove at Puerto Princesa City to Taytay at an average speed of 40 kph

dexar [7]

Step-by-step explanation:

Distance = Speed x Time

Given Distance = 40km/h or kph

Time = 5 hours 15 minutes

$5 \frac{15}{60} \\ = 5 \frac{1}{4} \\ = 5.25hours$

Distance Travelled = 40 kph x 5.25 hours

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2 years ago

Multiply.

Elis [28]

Hey there!

$Answer:\boxed{\text{C.}108.73608}$

$Explanation:$

$31.246*3.48$

Multiply to solve.

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3 years ago

Person A can make a cupcake in 5 minutes, Person B can make a cupcake in 9 minutes. In total they made 168 cupcakes. How many cu

Stolb23 [73]

Answer:

Person A made 108 cupcakes and person B made 60 cupcakes.

Step-by-step explanation:

Person A makes 1 cupcake in 5 minutes.

Say in x minutes A makes : $\frac{x}{5}$ cupcakes

Person B makes 1 cupcake in 9 minutes.

Say in x minutes B makes : $\frac{x}{9}$ cupcakes

Total cupcakes prepared by A and B in x minutes = 168

$\frac{x}{5}+\frac{x}{9}=168$

$\frac{14x}{45}=168$

$x=\frac{168\times 45}{14}=540$

So, cupcakes made by A = $\frac{540}{5}=108$

Cupcakes made by B = $\frac{540}{9}=60$

Person A made 108 cupcakes and person B made 60 cupcakes.

5 0

3 years ago

Two functions are combined resulting in the function j(x) = –3x2 + 5.

labwork [276]

Answer:

two quadratic functions combined by addition

a linear function and a quadratic function combined by addition

two linear functions combined by multiplication

Step-by-step explanation:

-3x² + 5

(-4x² + 4) + (x² + 1)

-3x² + 5

(-3x² - x) + (x + 5)

-3x² + 5

(sqrt(5) - sqrt(3)x)(sqrt(5) + sqrt(3)x)

7 0

2 years ago