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4 years ago

13

I need help. Pleaseeee

2 answers:

zhuklara [117]4 years ago

8 0

Answer: D

Step-by-step explanation:

0.07 or 7% use the toothpaste. This is smaller than the 18% who don’t. I hope this helps.

kykrilka [37]4 years ago

5 0

The answer is d because 7 percent is smaller than 18

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In TriangleARC, m AngleA = 70°. What is the measure of arc AC?

rusak2 [61]

I found the image that should have accompanied this problem.

The triangle inside the circle is an isosceles triangle. It has 2 equal sides and 2 equal angles.

Angle A = 70° , Angle C is also 70°. This leaves angle R having 40°.

The arc opposite angle R is twice the measure of its angle.

Angle R = 40°
Arc AC = 40° x 2 = 80°

The measure of arc AC is 80°.

4 0

3 years ago

Find Mx, My, and (x, y) for the lamina of uniform density rho bounded by the graphs of the equations. y = x2/3, y = 0, x = 1

erik [133]

Answer:

$\mathbf{(\overline x , \overline y ) = (\dfrac{5}{8}, \dfrac{5}{14})}$

Step-by-step explanation:

Given that:

$y = x^{2/3}$ at y = 0 , x = 1

Then:

Area = $\int^{1}_{0} x^{2/3} \ dx$

Area = $\begin {bmatrix} \dfrac{3}{5}x^{5/3} \end {bmatrix} ^1_0$

Area = $\dfrac{3}{5}$

Then:

$\overline x = \dfrac{1}{A} \int^b_a x (f(x) -g(x) ) \ dx$

$\overline x = \dfrac{5}{3} \int^1_0 x (x^{2/3} -0 ) \ dx$

$\overline x = \dfrac{5}{3} \int^1_0 x^{5/3} \ dx$

$\overline x = \dfrac{5}{3} \ [\dfrac{3}{8}x^{8/3}]^1_0$

$\overline x = \dfrac{5}{3} \times \dfrac{3}{8}$

$\overline x = \dfrac{5}{8}$

Similarly;

$\overline y = \dfrac{1}{A} \int^b_a \dfrac{1}{2} \begin{bmatrix} (f(x)^)2 - (g(x))^2 \end {bmatrix} \ dx$

$\overline y = \dfrac{5}{3} \int^1_0 \dfrac{1}{2} \begin{bmatrix} (f(x^{2/3})^2 -0 \end {bmatrix} \ dx$

$\overline y = \dfrac{5}{3} \int^1_0 \dfrac{1}{2} \begin{bmatrix} (x^{4/3} ) \end {bmatrix} \ dx$

$\overline y = \dfrac{5}{3} \begin{bmatrix} \dfrac{1}{2} (x^{7/3} ) \times \dfrac{3}{7} \end {bmatrix} ^1_0$

$\overline y = \dfrac{5}{3} \begin{bmatrix} \dfrac{3}{14} (x^{7/3} ) \end {bmatrix} ^1_0$

$\overline y = (\dfrac{5}{3} \times \dfrac{3}{14} )$

$\overline y = \dfrac{5}{14}$

Thus; $\mathbf{(\overline x , \overline y ) = (\dfrac{5}{8}, \dfrac{5}{14})}$

4 0

3 years ago

Rave-up party store buys some goods with a list price of $5,900. the supplier extends a 12 1/4%trade discount rate. What is the

Masteriza [31]

Answer:

$722.75

Step-by-step explanation:

Discount = original price × % discount

= $5900.00 × 0.1225

= $ 722.75

7 0

4 years ago

Can someone please help me?100% sure please

Arturiano [62]

The answer is D one trillion percent

7 0

3 years ago

Read 2 more answers

Solve for x. -3x + 4 = -8 <br> A) x = 4 <br> B) x = -4 <br> C) No Solution <br> D) x = - 4 /3

KengaRu [80]

<span>-3x + 4 = -8
Subtract 4 from both sides
-3x=-12
Divide -3 on both sides
Final Answer: A.) x=4</span>

3 0

3 years ago

Read 2 more answers