3 years ago

Evaluate if w = –2.1 and z = 5.7. w – z – 4

Mathematics

2 answers:

balandron [24]3 years ago

7 0

The answer is -13.8 :)

Alex777 [14]3 years ago

5 0

The answer will be -13.8

You might be interested in

Which is a correct classification for the triangle?

matrenka [14]

The correct answer is Right triangle

8 0

3 years ago

Read 2 more answers

A baby in the U.S weighs 3.295 kg according to the scale in the birthing room. Given that there are 28.3 grams in 1 ounce, conve

Nookie1986 [14]

3.295 kg x 1000g / kg x 1 ounce / 28.3g

116.43 ounces

7 0

3 years ago

Describe the translation from PQRS to P'Q'R'S

krok68 [10]

Right 8, down 2

Pick a point and follow the path that point takes

6 0

3 years ago

(5 ^ 11)/(5 ^ ?) = 5 ^ 4

katrin2010 [14]

Answer:

200

Step-by-step explanation:

55 / 5x = 20

5x=1100

x=200

6 0

3 years ago

Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7

Lapatulllka [165]

The first equation is $y-2x+1=0$

$y=2x-1$ (Equation 1)

The second equation is $4x^{2}+3y^{2}-2xy=7$ (Equation 2)

Putting the value of x from equation 1 in equation 2.

we get,

$4x^{2}+3(2x-1)^{2}-2x(2x-1)=7$

$4x^{2}+3(4x^{2}+1-4x)-4x^{2}+2x=7$

by simplifying the given equation,

$12x^{2}-10x-4=0$

$6x^{2}-5x-2=0$

Using discriminant formula,

$D=b^{2}-4ac$

$D=25-4 \times 6 \times -2 = 73$

Now the formula for solution 'x' of quadratic equation is given by:

$x=\frac{-b+\sqrt{D}}{2a} and x=\frac{-b-\sqrt{D}}{2a}$

$x=\frac{5+\sqrt{73}}{12} and x=\frac{5-\sqrt{73}}{12}$

Hence, these are the required solutions.

8 0

3 years ago