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3 years ago

Twice as number decreased by 9 is 7

Mathematics

1 answer:

marissa [1.9K]3 years ago

8 0

You said that. 2x - 9 = 7 . . . . . Add. 9. to each side: 2x = 16 . . . . . Divide each side by 2 : x = 8

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What is the number of terms in this geometric series? 1+2+4+...+64

ioda

Answer:

Step-by-step explanation:

1,2 ,4,8,16,32,64

4 0

3 years ago

Steph,andra,emily,and becca are planning a road trip from their hometown to san antonio

morpeh [17]

Answer:

a. Emily should begin her turn as the third driver at point (1, -0.5).

b. Emily's turn to drive end at point (-2.5, -3.75).

Step-by-step explanation:

Let assume that the group of girls travels from their hometown to San Antonio in a straight line. We know that each location is, respectively:

Hometown

$H(x,y) = (8,6)$

San Antonio

$T(x,y) = (-6,-7)$

Then, we can determine the end of each girl's turn to drive by the following vectorial expression based on the vectorial equation of the line:

Steph

$S(x,y) = H(x,y) + \frac{1}{4}\cdot [T(x,y)-H(x,y)]$ (1)

$S(x,y) = (8,6) + \frac{1}{4}\cdot [(-6,-7)-(8,6)]$

$S(x,y) = (8,6) +\frac{1}{4}\cdot (-14,-13)$

$S(x,y) = (4.5,2.75)$

Andra

$A(x,y) = H(x,y) + \frac{2}{4}\cdot [T(x,y)-H(x,y)]$ (2)

$A(x,y) = (8,6) + \frac{2}{4}\cdot [(-6,-7)-(8,6)]$

$A(x,y) = (8,6)+\frac{2}{4}\cdot (-14,-13)$

$A(x,y) =(1, -0.5)$

Emily

$E(x,y) = H(x,y) + \frac{3}{4}\cdot [T(x,y)-H(x,y)]$ (3)

$E(x,y) = (8,6) + \frac{3}{4}\cdot [(-6,-7)-(8,6)]$

$E(x,y) = (8,6)+\frac{3}{4}\cdot (-14,-13)$

$E(x,y) = (-2.5, -3.75)$

a. <em>If the girls take turns driving and each girl drives the same distance, at what point should they stop from Emily to begin her turn as the third driver? </em>

Emily's beginning point is the Andra's stop point, that is, $A(x,y) =(1, -0.5)$ .

Emily should begin her turn as the third driver at point (1, -0.5).

b. <em>At what point does Emily's turn to drive end?</em>

Emily's turn to drive end at point (-2.5, -3.75).

7 0

3 years ago

Ahh someone help I dont wanna fail

garri49 [273]

Answer:

red=500

yellow=300

green=400

Step-by-step explanation:

6 0

3 years ago

A brownie recipe asks for three and one half times as much sugar as chocolate chips. If four and two thirds cups of sugar is use

Svetradugi [14.3K]

Answer:

1 1/3 chocolate chips

Step-by-step explanation:

you have to divide 4 2/3 ÷ 3 1/2

change mixed number to improper fraction

14/3÷7/2

KFC-Keep Flip Change

14/3 × 2/7 = 28/21

28÷21= 1 1/3

4 0

3 years ago

Write an expression that equals 24 include an exponent

pogonyaev

Answer:

(4^2)+8

4 times 4 is 16,

16 plus 8 is 24.

3 0

4 years ago