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d1i1m1o1n [39]
2 years ago
7

I WILL AWARD BRAINLIEST!! PLEASE HELP!!!! SOLVE EACH!!!

Mathematics
1 answer:
Jlenok [28]2 years ago
4 0

Answer:

A. -\frac{9}{4}\le \:m\le \frac{9}{4}

B. -\frac{58}{5}

C. k or k>7

Step-by-step explanation:

\left|\frac{m+3m}{3}\right|-1\le \:2

\left|\frac{m+3m}{3}\right|\le \:3

-3\le \frac{m+3m}{3}\le \:3

m\ge \:-\frac{9}{4}

m\le \frac{9}{4}

-\frac{9}{4}\le \:m\le \frac{9}{4}

____________________

\left|\frac{5z-6}{8}\right|

-8

z>-\frac{58}{5}

z

-\frac{58}{5}

____________________

5

\left|\frac{3k-1}{4}\right|>5

k

k>7

k

k>7

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Dan thinks of a number
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Answer:

-1

Step-by-step explanation:

2 - 3 = -1

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2 years ago
Can you divide a donut into 5 pieces (doesn't have to be equal)? If so could you explain or draw a diagram. using 2 straight cut
svp [43]

Answer:

no

Step-by-step explanation:

Its not possible to make 5 pieces with only 2 cuts. Anyway you use your two cuts would not result in 5 pieces

6 0
2 years ago
Read 2 more answers
A circle has a diameter of 15 cm. Find the circumference. . Use 3.14 for π. Round your answer to the nearest tenth. PLEASE HELP!
8_murik_8 [283]

Answer:

47.1 cm

Step-by-step explanation:

<u>The formula for finding circumference is πd. So, plug in the given values and simplify the expression:</u>

d = 15

π = 3.14

15 × 3.14 = 47.1

<u>The circumference of a circle with a diameter of 15 cm and using 3.14 as a substitute for π will be </u><u>47.1 cm</u><u>.</u>

4 0
3 years ago
Read 2 more answers
Help me with this question <br> Please I need help
34kurt

Answer:

384 cm²

Step-by-step explanation:

The shape of the figure given in the question above is simply a combined shape of parallelogram and rectangle.

To obtain the area of the figure, we shall determine the area of the parallelogram and rectangle. This can be obtained as follow:

For parallelogram:

Height (H) = 7.5 cm

Base (B) = 24 cm

Area of parallelogram (A₁) =?

A₁ = B × H

A₁ = 24 × 7.5

A₁ = 180 cm²

For rectangle:

Length (L) = 24 cm

Width (W) = 8.5 cm

Area of rectangle (A₂) =?

A₂ = L × W

A₂ = 24 × 8.5

A₂ = 204 cm²

Finally, we shall determine the area of the shape.

Area of parallelogram (A₁) = 180 cm²

Area of rectangle (A₂) = 204 cm²

Area of figure (A)

A = A₁ + A₂

A = 180 + 204

A = 384 cm²

Therefore, the area of the figure is 384 cm²

3 0
2 years ago
The line L is a tangent to the curve with equation y= 4x^2 +1 . The line L cuts the y axis at (0,8) and has a positive gradient.
sergeinik [125]

A generic point on the graph of the curve has coordinates

(x, 4x^2+1)

The derivative gives us the slope of the tangent line at a given point:

f(x) = 4x^2+1 \implies f'(x) = 8x

Let k be a generic x-coordinate. The tangent line to the curve at this point will pass through (k, 4k^2+1) and have slope 8k

So, we can write its equation using the point-slope formula: a line with slope m passing through (x_0, y_0) has equation

y-y_0 = m(x-x_0)

In this case, (x_0, y_0)=(k, 4k^2+1) and m=8k, so the equation becomes

y-4k^2-1 = 8k(x-k)

We can rewrite the equation as follows:

y-4k^2-1 = 8k(x-k) \iff y = 8kx - 8k^2+4k^2+1 \iff y = 8kx-4k^2+1

We know that this function must give 0 when evaluated at x=0:

f(x) = 8kx-4k^2+1 \implies f(0) = -4k^2+1 = 8 \iff -4k^2 = 7 \iff k^2 = -\dfrac{7}{4}

This equation has no real solution, so the problem looks impossible.

5 0
3 years ago
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