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3 years ago

Help me pls subtract 28.9 -9.25

Mathematics

2 answers:

matrenka [14]3 years ago

6 0

19.65 hope this helps :)

nordsb [41]3 years ago

4 0

Answer:

19.65

Step-by-step explanation:

you line 28.9 with 9.25 below it and then you subtract it. take it one column at a time.

28.9

- 9.25

the imaginative zero becomes 10 and then the 9 becomes an 8 so 10-5=5 and 8-2=6

then you subtract 9 from 28 and get 19

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Find the average rate of change of k(x)=5x–19 over the interval [ - 14, - 4].

rusak2 [61]

The rate of change of a function can be modeled with the following expression:

$\frac{\Delta{k{x)}}{\Delta{x}}$

Where Δx is the change in x value, and Δk(x) is the corresponding change in k(x). We're given the two extremes of x, so we can calculate the change in x to be

$\Delta{x}=-4-(-14)=10$

To find the change in k(x), we can calculate the values of k(x) at x = -14 and x = -4 and find the difference between them:

$k(-14)=5(-14)-19=-70-19=-89\\ k(-4)=5(-4)-19=-20-19=-39\\ \Delta{y}=k(-14)-k(-4)=-89-(-39)=-50$

So, the rate of change for the function from x = -14 to x = -4 is

$\frac{\Delta{y}}{\Delta{x}}= \frac{-50}{10}=-5$

7 0

4 years ago

Whoever puts there answer first get brainlest

Anvisha [2.4K]

Answer:

$\large Q1:\ x=18\ ft\\\\Q2:\ 6\ inches$

Step-by-step explanation:

Q3.

If ΔGHI and ΔJKL are similar, then the sides are in proportion:

$\dfrac{JL}{GI}=\dfrac{LK}{IH}$

We have

JL = x, GI = 9 ft, LK = 24 ft, IH = 12 ft.

Substitute:

$\dfrac{x}{9}=\dfrac{24}{12}$

$\dfrac{x}{9}=2$ multiply both sides by 2

$x=18\ ft$

Q4.

We must multiply the original length by a scale factor of 3/4:

$\dfrac{3}{4}\cdot8\ in=\dfrac{3}{1}\cdot2\ in=(3)(2)\ in=6\ in$

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3 years ago

A camel spends 5/6 of its life asleep. If a camel lives to be 24 years old, how many years does it spend asleep?

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3 years ago

Read 2 more answers

The radius of a circle is 14 yards. What is the circle's circumference?

WINSTONCH [101]

Answer:

87.96yd

Step-by-step explanation:

C=2πr=2·π·14≈87.96459yd

4 0

3 years ago

English

asambeis [7]

Answer:

38.25 units.

Step-by-step explanation:

The trapezoid is given with vertices Q(8, 8), R(14, 16), S(20, 16), and T(22, 8)

When given vertices ( x1, y1), (x2, y2)

We use the formula:

√(x2 - x1)² + (y2 - y1)² to find the length of the sides of the Trapezoid

Side QR: Q(8, 8), R(14, 16)

= √(x2 - x1)² + (y2 - y1)²

= √(14 - 8)² + (16 - 8)²

= √6² + 8²

= √36 + 64

= √100

= 10 units

Side RS: R(14, 16), S(20, 16)

= √(x2 - x1)² + (y2 - y1)²

= √(20 - 14)² + (16 - 16)²

= √6² + 0²

= √36

= 6 units

Side ST : S(20, 16), T(22, 8)

= √(x2 - x1)² + (y2 - y1)²

= √(22 - 20)² + ( 8 - 16)²

= √2² + (-8)²

= √4 + 64

= √68

= 8.2462112512

≈ nearest hundredth = 8.25 units

Side QT, Q(8, 8), T(22, 8)

= √(x2 - x1)² + (y2 - y1)²

= √(22 - 8)² + (8 - 8)²

= √14² + 0²

= √196

= 14 units

The Perimeter of a Trapezoid is the sum of all it's sides.

P = QR + RS + ST + QT

P = (10 + 6 + 14 + 8.25) units

P = 38.25 units

Therefore, the perimeter of the trapezoid with vertices Q(8, 8), R(14, 16), S(20, 16), and T(22, 8) is 38.25units.

3 0

3 years ago

Help me pls subtract 28.9 -9.25​

Help me pls subtract 28.9 -9.25