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3 years ago

Pls help me fast ASAP

Mathematics

1 answer:

cricket20 [7]3 years ago

8 0

Since x=-4 and f(x) =x^3 when - 5<=x<=2,
f(-4)= -64

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Need help with this one !

nika2105 [10]

Answer:

r=5

Step-by-step explanation:

5x5x5=125

6 0

3 years ago

The two-way table shows information about the subjects studied

son4ous [18]

Answer:

a) 62

b) 31/45

Step-by-step explanation:

a) The table tells you there are 42 males, and 20 more females that study biology.

42 +20 = 62 . . . are male or study biology or both

b) Of the total of 90 people, 62 are male or study biology (or both). The probability that any person is in that category is ...

62/90 = 31/45 = P(male or biology)

4 0

3 years ago

What is... 6x-2y=5 3x+2y=-2

artcher [175]

6x-2y=5
x-intercept = 5/6
 y-intercept = 5/-2
3x+2y=-2
 x-intercept = -2/3
y-intercept = -2/2

7 0

3 years ago

If logb 5=0.41, find logb 12

Hitman42 [59]

Determine which one of the following is the correct application of the change of base formula?

a)log3 14= log10 14/3
b)lo4 17= log10 4/ log10 17
c)log8 3= log10 3/log10 8
d)log9 32 = log10 32-log10 9

The change of base formula is as follows:
log to the base 10 of x
log to the base b of x = ----------------------------------
log to the base 10 of b

Compare this to answer choice C:

c)log8 3= log10 3/log10 8 Here x = 3 and b = 8. This is the only correct choice.

6 0

3 years ago

The venticles of a right angle are a[0,4], b[3,-2] c[-3, -4] Find It's area.

givi [52]

Answer:

The area of this triangle is about 21.2132 square units.

Step-by-step explanation:

First, find the lengths of the legs AB and BC.

Length of AB ===

Find the difference in position vertically:

$-2-4=-6$

The points are 6 units apart vertically.

Find the difference in position horizontally:

$3-0=3$

The points are 3 units apart horizontally.

These lengths form a right triangle with the distance between the points as the hypotenuse, so you can use the pythagorean theorem to solve:

$a^2+b^2=c^2\\3^2+6^2=c^2\\9+36=c^2\\45=c^2\\c\approx6.7082$

AB is about 6.7082 units long.

Length of BC ===

Same process as above.

Find the vertical distance:

$-4--2=-2$

2 units apart vertically.

Find the horizontal distance:

$-3-3=-6$

6 units apart horizontally.

Use the pythagorean theorem:

$2^2+6^2=c^2\\4+36=c^2\\40=c^2\\c=6.3246$

BC is about 6.3246 units long.

Area ===

Finally, you can use these to find the area of the triangle. The area of a right triangle is just half the area of a rectangle with the same base and height:

$A=\frac{b\times h}{2}\\\\A=\frac{6.7082\times6.3246}{2}\\\\A=\frac{42.4264}{2}\\\\A=21.2132$

The area of this triangle is about 21.2132 square units.

4 0

3 years ago