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3 years ago

Rule y=2x complete the table x|y ----- 9| ? ? |10 1 | ?

Mathematics

1 answer:

lora16 [44]3 years ago

7 0

Answer:
x | y
9 | 18
5 | 10
1 | 2

to get this, just substitute the numbers in for the given variables

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Twelve less than 3 times a number is less than 27

Maslowich

The number is 5. 27-12=15/3=5 is how you get the answer.

5 0

4 years ago

1/a+1/b=1/x solve for x

VashaNatasha [74]

Answer:

x = $\frac{ab}{b+a}$

Step-by-step explanation:

Given

$\frac{1}{a}$ + $\frac{1}{b}$ = $\frac{1}{x}$ ( express the sum on the left as a single fraction )

$\frac{b+a}{ab}$ = $\frac{1}{x}$ ( cross- multiply )

x(b + a) = ab ← divide both sides by (b + a)

x = $\frac{ab}{b+a}$

6 0

4 years ago

George decides to walk from his home to Tina's house down the street. On the way,

hichkok12 [17]

Answer:

The coordinates of the gas station are (5, 9)

Step-by-step explanation:

As given,

George begins at (2,3), ends at (9,17), and stops at the gas station at (x,y). If the part to part ratio is 3:4

A P B

(2, 3) (x, y) (9, 17)

3 : 4

we use the Interval Division formula :

If P(x,y) lies on the interval A(x1,y1), B(x2,y2) such that AP:PB=a:b, with a and b positive, then

x= $\frac{bx1 + ax2}{a + b}$

y= $\frac{by1 + ay2}{a + b}$

Here , (x1, y1) = (2, 3)

(x2, y2) = (9, 17)

a : b = 3 : 4

⇒ x= $\frac{bx1 + ax2}{a + b}$ = $\frac{4(2) + 3(9)}{3 + 4} = \frac{8 + 27}{7} = \frac{35}{7} = 5$

y= $\frac{by1 + ay2}{a + b}$ = $\frac{4(3) + 3(17)}{3 + 4} = \frac{12 + 51}{7} = \frac{63}{7} = 9$

∴ The coordinates of the gas station are (5, 9)

3 0

3 years ago

Let ∠D be an acute angle such that tanD=0.28. Use a calculator to approximate the measure of ∠D to the nearest tenth of a degree

GalinKa [24]

$\tan(D)=0.28\implies\arctan(0.28)=D\approx15.6^{\circ}$

Hope this helps.

4 0

4 years ago

Select all of the solutions for the linear inequality graphed in the picture

Vesna [10]

All but (0,-2 and 4,-1)

5 0

3 years ago