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2 years ago

Of the 140 pages in a book, 80% of them have illustrations. How many pages have illustrations?

Mathematics

2 answers:

timofeeve [1]2 years ago

6 0

Answer:

112 pages have illustrations.

Step-by-step explanation:

Cloud [144]2 years ago

3 0

Answer: 140 x

25%=35 or 140/4 = 35

Step-by-step explanation:

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Which equation demonstrates the distributive property?

yulyashka [42]

Answer:

the answer is D.

Step-by-step explanation:

distribute property requires you to multiply the number outside the parenthesis in everything in the parenthesis. hope this helps.

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3 years ago

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Jonathan’s class has 30 boys. Of the students in his class, 60% are girls. How many girls are in Jonathan’s class?

Aleksandr-060686 [28]

Answer: 45

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3 years ago

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This is what i need help on

Scilla [17]

G2=g1*2
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2 years ago

Theo had 2 blocks. Then he got 2 more blocks from Ray and some more blocks from Lia. Now Theo has 12 blocks.

Oliga [24]

Answer:

The answer is D: 2+2+b=12

Step-by-step explanation:

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2 years ago

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Consider the following equation. f(x, y) = y3/x, P(1, 2), u = 1 3 2i + 5 j (a) Find the gradient of f. ∇f(x, y) = Correct: Your

BaLLatris [955]

$f(x,y)=\dfrac{y^3}x$

a. The gradient is

$\nabla f(x,y)=\dfrac{\partial f}{\partial x}\,\vec\imath+\dfrac{\partial f}{\partial y}\,\vec\jmath$

$\boxed{\nabla f(x,y)=-\dfrac{y^3}{x^2}\,\vec\imath+\dfrac{3y^2}x\,\vec\jmath}$

b. The gradient at point P(1, 2) is

$\boxed{\nabla f(1,2)=-8\,\vec\imath+12\,\vec\jmath}$

c. The derivative of $f$ at P in the direction of $\vec u$ is

$D_{\vec u}f(1,2)=\nabla f(1,2)\cdot\dfrac{\vec u}{\|\vec u\|}$

It looks like

$\vec u=\dfrac{13}2\,\vec\imath+5\,\vec\jmath$

so that

$\|\vec u\|=\sqrt{\left(\dfrac{13}2\right)^2+5^2}=\dfrac{\sqrt{269}}2$

Then

$D_{\vec u}f(1,2)=\dfrac{\left(-8\,\vec\imath+12\,\vec\jmath\right)\cdot\left(\frac{13}2\,\vec\imath+5\,\vec\jmath\right)}{\frac{\sqrt{269}}2}$

$\boxed{D_{\vec u}f(1,2)=\dfrac{16}{\sqrt{269}}}$

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3 years ago