Ask question

Ask question

All categories

2 years ago

5

Please answer I will mark brainiest

1 answer:

Shkiper50 [21]2 years ago

8 0

Its negative, the sign of the sum is the sign of addend with the greatest absolute value.

You might be interested in

Find the area of the circle with a diameter of 6cm.

VikaD [51]

Answer:

the area is 28.27

Step-by-step explanation:

6 0

3 years ago

Through (-1,4) and a perpendicular to 4y-2x=12

mart [117]

Answer:

<h2>y = -2x + 2 → 2x + y = 2</h2>

Step-by-step explanation:

$\text{The slope-intercept form of an equation of a line:}\\\\y=mx+b\\\\m-\text{slope}\\b-\text{y-intercept}\\\\\text{Let}\\\\k:y=m_1x+b_1\\\\l:y=m_2x+b_2\\\\\text{then}\\\\k\ \perp\ l\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\k\ ||\ l\iff m_1=m_2$

$\text{We have the equation of a line in the standard form:}\ Ax+By=C.\\\\\text{Convert to the slope-intercept form:}\\\\4y-2x=12\qquad\text{add}\ 2x\ \text{to the both sides}\\\\4y-2x+2x=2x+12\\\\4y=2x+12\qquad\text{divide both sides by 4}\\\\\dfrac{4y}{4}=\dfrac{2x}{4}+\dfrac{12}{4}\\\\y=\dfrac{1}{2}x+3\to\boxed{m_1=\dfrac{1}{2}}$

$\text{Therefore}\ m_2=-\dfrac{1}{\frac{1}{2}}=-2.\\\\\text{Put the value of the slope and the coordinates of the given point (-1, 4)}\\\text{to the equation of a line:}\\\\4=-2(-1)+b\\\\4=2+b\qquad\text{subtract 2 from the both sides}\\\\4-2=2-2+b\\\\2=b\to b=2\\\\\bold{FINALLY:}\ y=-2x+2$

$\text{Convert to the standard form:}\\\\y=-2x+2\qquad\text{add}\ 2x\ \text{to the both sides}\\\\y+2x=-2x+2x+2\\\\2x+y=2$

4 0

4 years ago

Give that T = 37v/6v-5.4m a. Make V the subject of relation b. If T = 4.5 and M =7x10(7),calculate the value of v , leaving your

PilotLPTM [1.2K]

Answer:

$v = \frac{5.4mT}{6T - 37}$

$v = -1.701*10^8$

Step-by-step explanation:

Given

$T = \frac{37v}{6v-5.4m}$

Solving (a): Make v the subject

$T = \frac{37v}{6v-5.4m}$

Cross Multiply:

$(6v-5.4m)T = 37v$

Open bracket

$6vT - 5.4mT = 37v$

Collect Like terms

$6vT - 37v= 5.4mT$

Factorize:

$(6T - 37)v= 5.4mT$

Make v the subject

$v = \frac{5.4mT}{6T - 37}$

Solving (b):

$T = 4.5$

$m = 7 * 10^7$

So, the expression becomes:

$v = \frac{5.4mT}{6T - 37}$

$v = \frac{5.4*7*10^7*4.5}{6*4.5 - 37}$

$v = \frac{170.1*10^7}{27 - 37}$

$v = \frac{170.1*10^7}{-10}$

$v = -17.01*10^7$

$v = -1.701*10*10^7$

$v = -1.701*10^8$

6 0

3 years ago

Help please , need answer ASAP

pantera1 [17]

Answer:

(fg)(9) = 948

Step-by-step explanation:

(fg)(9) = f(9)×g(9) = (9 +3)(9^2 -2) = (12)(79)

(fg)(9) = 948

7 0

3 years ago

Erica wants to decorate a rectangular box by covering all the faces of the box, including the top and bottom, with 1-inch square

BlackZzzverrR [31]

Answer:

142

Step-by-step explanation:

This is a Total Surface Area problem.

The box has 6 faces (sides): front, back, left, right, top, bottom. They are all rectangles. Area of a rectangle is length × width.

You find the area of each face and add them all up.

see image.

TSA = 15+15+21+21+35+35

= 30+42+70

= 142 sq inches

Erica needs 142 pieces of paper to decorate her box.

4 0

2 years ago