All categories

4 years ago

4 + -7 1/2 need help asap -10 points-

Mathematics

2 answers:

Lady bird [3.3K]4 years ago

8 0

Answer:

the answer should be -31.5

Step-by-step explanation:add 4 and -71 and the answer divide it by 2

SCORPION-xisa [38]4 years ago

5 0

Answer:

It is -3 1/2

Step-by-step explanation

First, Try to forget about the 1/2 (we'll use it later)

Now, The way i did it is by doing 7-4 (I got 3)

Lastly, put the negative sign back on the 3 and put the 1/2

There YoU go

You might be interested in

Which expressions are equivalent to -2(5x-3/4)?

kogti [31]

Answer:

-10x+3/2

Hope this helps

6 0

3 years ago

A woman walks due west on the deck of a ship at 3 mi/h. The ship is moving north at a speed of 22 mi/h. Find the speed and direc

Minchanka [31]

Answer: The speed is 22.2 mi/hr and woman is 8° north relative to the surface of the water.

Step-by-step explanation:

Since we have given that

Speed at which woman walks due west = 3 mi/hr

Speed at which ship moving due north = 22 mi/hr

Now it forms "Pythagorus theorem":

So, it becomes,

$H^2=B^2+P^2\\\\H^2=3^2+22^2\\\\H^2=9+484\\\\H^2=493\\\\H=\sqrt{493}\\H=22.20\ mi/hr$

And the direction of the woman relative to the surface of the water is given by

$\theta=\sin^{-1}x(\dfrac{3}{22.2})=7.76\approx 8^\circ$

Hence, the speed is 22.2 mi/hr and woman is 8° north relative to the surface of the water.

5 0

3 years ago

Can someone help? This is so hard

Sunny_sXe [5.5K]

Answer:

#1 x = 31°

#2 x = 125°

Step by Step Explanation:

By the theorem of intersecting secants outside of the circle, we have:

$x=\frac{1}{2}(103\degree-41\degree)$

$\implies x=\frac{1}{2}(62\degree)$

$\implies \red{\bold{x=31\degree}}$

By the theorem of intersecting chords, we have:

$x=\frac{1}{2}(96\degree+154\degree)$

$\implies x=\frac{1}{2}(250\degree)$

$\implies \purple{\bold{x=125\degree}}$

4 0

2 years ago

The ratio of girls to boys in the photography club is 7 to 3. Which ratio could represent the members of the photography club?

MA_775_DIABLO [31]

Answer:

C) 21 girls : 9 boys

Step-by-step explanation:

You just have to compare the ratio you're given to the answers and see if the ratios from the answers match up to the ratio you were given. The reason C is the answer is because if you divide by 3 in the ration, it is the same as the ratio you were given, 7:3

8 0

3 years ago

Which table of ordered pairs represents a proportional relationship

Delvig [45]

Answer:

Step-by-step explanation:

Which table of ordered pairs represents a proportional relationship

3 0

3 years ago