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IrinaK [193]
2 years ago
13

Translate the sentence into an equation.

Mathematics
1 answer:
Andreas93 [3]2 years ago
3 0

Question:

Twice the difference of a number and 5 is equal to 9 .

Answer:

2x - 5 = 9

Step-by-step explanation:

Required

Translate

Let the number be x

Twice the number, x is 2x

The difference between (above) and 5 is 2x - 5

This equals to 9.

So, the expression becomes

2x - 5 = 9

Solving further:

2x = 5 + 9

2x = 14

Divide through by 2

x = 7

<em>Hence, the number is 7</em>

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Select the expressions whose value is 4. <br> (-2)² <br> |- 4| <br> - 4÷2 <br> 2(-2)
Dmitry [639]
The first and the second one.

-2*-2=4

Absolute value of -4 is 4
7 0
2 years ago
Help, I need the bottom three answered and I'm sorta stuck on four too. Not sure if it's right
amm1812
5. 15 yards = 13.716 meters, so 13.716 meters
6. 32.366 meters per second
7. 32÷2=16 and 16×60= 960, so it can eat 16 in one minute, and 960 in one hour.
Hope this helps!
7 0
3 years ago
A rectangle has an area of 40 sq units , then length is 6 units greater than the width
devlian [24]

Answer:

A=L*W

Let w be width

L=(w+6)

40=(w+6)*w

40= w^{2} +6w

w^{2} +6w-40=0

w^{2}+10w-4w-40=0  

w(w+10)-4(w+10)=0

(w-4)(w+10)=0

w=4

Length= 10 units

Width=4 units

Step-by-step explanation:

6 0
2 years ago
Find sin x/2, cos x/2, and tan x/2 from the given information.. cos x = −15/17, 180° &lt; x &lt; 270°. . sin x/2=. . cos x/2=. .
sukhopar [10]
So base on your question the possible answer to that kind of question and the solution are the following and i hope you will understand the formula and free to ask some questions if needed.

<span>2<span>cos2</span><span>x2</span>=1+cosx=1−<span>1517</span>=<span>217</span>,<span>cos2</span><span>x2</span>=<span>117</span></span> <span>cos<span>x2</span>=−<span>1<span>17<span>−−</span>√</span></span>....(1)</span> <span>sin<span>x2</span>=<span>1<span>17<span>−−</span>√</span></span>,90<<span>x2</span><135</span> <span>sin<span>x2</span>>0,cos<span>x2</span><0,tan<span>x2</span><0</span> <span>2<span>sin2</span><span>x2</span>=1−cosx=1−<span><span>−15</span>17</span>=<span>3217</span>,sin<span>x2</span>=<span>4<span>17<span>−−</span>√</span></span>.....(2)</span><span> divide (2) by (1) and get the value of tan x/2</span>
6 0
2 years ago
Read 2 more answers
Write in slope-intercept form an equation of the line that passes through the point (3,−5) with slope −4.
marishachu [46]

Answer:

y=-4x+7

Step-by-step explanation:

You put the points on a graph in desmos and then in a new line put the y=-4x+ and Playa round with numbers until you hit the point

8 0
3 years ago
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