Help please . will give brainliest

Mathematics

1 answer:

marishachu [46]4 years ago

3 0

Answer:

Step-by-step explanation:

the last number is the y intercept so the intercept in the line is -3.5 so I just matched them up.

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Really need to someone to break this down so I can understand it

djyliett [7]

Answer:

Slope is 4/3

Step-by-step explanation:

Slope is the derivative of the equation:

$y = \frac{1}{3} {x}^{2} - 2x + 15 \\ \\ \frac{dy}{dx} = \frac{1}{3} (2x) - 2 + 0 \\ \\ \frac{dy}{dx} = \frac{2}{3} x - 2$

At point (5, 7), x is 5:

$\frac{dy}{dx} = (\frac{2}{3} \times 5) - 2 \\ \\ \frac{dy}{dx} = \frac{10}{3} - 2 \\ \\ \frac{dy}{dx} = \frac{10 - 6}{3} \\ \\ \frac{dy}{dx} = \frac{4}{3}$

4 0

3 years ago

father's step is 65cm long while his daughter's step 4dm long. they start walking together. when the father has walk 8 step, his

forsale [732]

Answer:

5 steps

Step-by-step explanation:

$65cm \times 8 = 520cm$

$4dm = 40cm \\ 65 - 40 = 25$

$25 \times 8 = 200cm \: gap$

$200 \div 40 = 5$

7 0

3 years ago

Read 2 more answers

Given: Quadrilateral ABCD is inscribed in circle O.

Airida [17]

1. Quadrilateral ABCD is inscribed in circle O
A quadrilateral is a four sided figure, in this case ABCD is a cyclic quadrilateral such that all its vertices touches the circumference of the circle.
A cyclic quadrilateral is a four sided figure with all its vertices touching the circumference of a circle.

2. mBCD = 2 (m∠A) = Inscribed Angle Theorem
An inscribed angle is an angle with its vertex on the circle, formed by two intersecting chords.
Such that Inscribed angle = 1/2 Intercepted Arc
In this case the inscribed angle is m∠A and the intercepted arc is MBCD
Therefore; m∠A = 1/2 mBCD

4. The sum of arcs that make up a circle is 360
Therefore; mBCD + mDAB = 360°
The circles is made up of arc BCD and arc DAB, therefore the sum angle of the arcs is equivalent to 360°

5. 2(m∠A + 2(m∠C) = 360; this is substitution property
From step 4 we stated that mBCD +mDAB = 360
but from the inscribed angle theorem;
mBCD= 2 (m∠A) and mDAB = 2(m∠C)
Therefore; substituting in the equation in step 4 we get;
2(m∠A) + 2(m∠C) = 360

6 0

4 years ago

Read 2 more answers

X^2+10 Factor the expression

Elena L [17]

$x^{2} +10\\x^{2} -(-10)\\x^{2} -10i^{2} \\(x+10i)(x-10i)$