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3 years ago

Factorise x² - 7x +10

Mathematics

1 answer:

Dafna1 [17]3 years ago

5 0

(x-2) (x-5)
Lmk if you need step by step

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Please help! Find the surface area of the composite figure

Anni [7]

Answer:

Step-by-step explanation:

area of base=6×6=36 m²

surface area of four walls=4×6×12=144 m²

area of top= area of four triangles=4×1/2×6×5=60 m²

total surface area=36+144+60=240 m²

3 0

3 years ago

Help me I don’t understand

Fantom [35]

Answer:

<1= 32*

<2= 32*

<3= 40*

Step-by-step explanation:

a triangle also adds up to 180*

m <1 = 90+58=148 then 180-148=32*

<1 and <2 are equal so <2 also =32*

m <3= 108+32=140 then 180-140=40

6 0

2 years ago

Carole's car averages 13.2 mi/gal in city driving and 25.3 mi/gal in highway driving. If she drove a total of 396.0 mi on 19 gal

nika2105 [10]

Answer:

7 gallons were used for city driving.

Step-by-step explanation:

I am going to solve this question by a system of equations.

I am going to say that:

x is the number of gallons driven in the city.

y is the number of gallons driven in the highway.

19 gal of gas

This means that $x + y = 19$

Carole's car averages 13.2 mi/gal in city driving and 25.3 mi/gal in highway driving. If she drove a total of 396.0 mi.

This means that $13.2x + 25.3y = 396$

How many of the gallons (to the nearest gallon) were used for city driving?

This is x

From the first equation, i will have

$y = 19 - x$

Replacing in the second equation

$13.2x + 25.3y = 396$

$13.2x + 25.3(19 - x) = 396$

$13.2x - 25.3x = 396 - 480,7$

$12.1x = 84.7$

$x = \frac{84.7}{12.1}$

$x = 7$

7 gallons were used for city driving.

5 0

3 years ago

Find the Perimeter <br> and Area <br> of the following:

Lynna [10]

Peramter 7 and area 49

5 0

3 years ago

You need

riadik2000 [5.3K]

Answer:

11/4 = 5/4

If you need 5/4 cups of sugar to make 20 cookies or in other words,

For 20 cookies you need 5/4 cups of sugar then

for 14 cookies you will need: 14 * (5/4)/20 = 7/8 cups of cookies

if you like a very sweet cookies then you can add a bit more sugar to make it 1 full cup of suger

6 0

3 years ago