All categories

4 years ago

Twice a number decreased by four is seven

Mathematics

1 answer:

GalinKa [24]4 years ago

4 0

Answer:

2x > 10+4

x > 14/2

x > 7

Step-by-step explanation:

You might be interested in

In 2012, entering freshmen at the UA have an average ACT score of 25.4 with a standard deviation of 2.1. 1. What is the probabil

astra-53 [7]

Answer:

P [ Z > 24,1 ] = 72,24 %

Step-by-step explanation:

P [ Z > 24,1 ] = 1 - P [ Z < 24,1 ]

P [ Z < 24,1 ] = ( Z - μ₀ ) / σ

P [ Z < 24,1 ] = ( 24,1 - 25,4) / 2,1

P [ Z < 24,1 ] = - 1,3/ 2,1

P [ Z < 24,1 ] = - 0,6190 ≈ - 0,62

We look in z-table and find for z(score) -0,6190

P [ Z < 24,1 ] = 0,27763

Then

P [ Z > 24,1 ] = 1 - 0,27763

P [ Z > 24,1 ] = 0,72237 ⇒ or P [ Z > 24,1 ] = 72,24 %

4 0

3 years ago

11. Which pair of angles is always congruent?

GenaCL600 [577]

Answer:

<h3>C. Two vertical angles</h3>

This is your answer mate

3 0

3 years ago

Pls help i will give brainliest

Dominik [7]

Well first of all the shorter pipe would be 160ft bc 120/3 is 40 and 40*4 is 160 so the shorter piece is 160ft and 160+12 is 172 so the longer piece of pipe would be 172ft

I’m pretty sure I’m correct, lemme know if I’m not
Hope this helps :)

6 0

3 years ago

A particle moves on a coordinate line with acceleration Star tFraction d squared s Over dt squared End Fraction equals 60 Start

Firlakuza [10]

Answer:

Velocity , v (t) = 90√t³ - 42√t

Position , s (t) = 36 √t⁵ - 28√t³

Step-by-step explanation:

d²s/dt =60√t -21/√t,-------------------------------------------- (1)

Subject to:

ds/dt =8; 16 at t=1

Integrating equation (1) we have :

ds/dt = 90√t³ - 42√t-------------------------------------------------- (2)

s = ∫90√t³ - 42√t dt

= 36 √t⁵ - 28√t³ --------------------------------------------------- (3)

Velocity , v (t) = 90√t³ - 42√t

Position , s (t) = 36 √t⁵ - 28√t³

4 0

3 years ago

There are 1/6 gallons of water in a 2/3 gallon container. What fraction of the container is filled?

Ivenika [448]

Answer:

1/4

Step-by-step explanation:

2/3 multiply top and bottom of fraction by 2

4/6 is the capacity of the container

1/6 is filled

so 1/4 of the container is filled

6 0

3 years ago

Read 2 more answers