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Zinaida [17]
3 years ago
11

You are going to write a program for Computer test which will read 10 multiple choice questions from a file, order them randomly

and provide the test to the user. When the user done the program must give the user his final score

Computers and Technology
1 answer:
sweet-ann [11.9K]3 years ago
6 0

Answer:

Code is too large , i attached a source file below and also a text file from where i get Questions

Explanation:

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echnician A says that underinflation can increase the rolling resistance of a tire. Technician B says that underinflation can ca
max2010maxim [7]

Answer:

c)both a and b

Explanation:

If the tires are under inflated the the rolling resistance increases due to more surface are of tire now touches the ground hence there is more friction.Since the rolling resistance increases the tire will face difficulty in turning hence the steering the tires will become more hard.Since rolling resistance is increased so the engine has to work more to run the car hence it will consume more fuel.

4 0
3 years ago
I have a problem with Instagram.
krok68 [10]

Answer:

developer tool

Explanation:

if you're using chrome click on the 3 dots that's in the top right corner and go to tools, you will see "developer tools" and click on that, then you will see an icon that shows a laptop/computer and an iphone click on that and you can even choose the type of phone you wish to see the view of (ex. iphone X), refresh the page and you will be able to see the direct message icon and you will be able to message your friend.

good luck.

5 0
3 years ago
A power supply unit for a computer converts:
Vinvika [58]
A power supply unit (or PSU) converts mains AC to low-voltage regulated DCpower for the internal components of acomputer. ... Some power supplies have a manual switch for selecting input voltage, while others automatically adapt to the mains voltage.
5 0
3 years ago
Observe the things at Home in which you are using binary
vazorg [7]

Explanation:

All five things i can come up with her

1. Doors (we either open or close them)

2. Tap (we either open or close the valve)

3.  Electric stove/cooker

4. The lid of containers

5. Shoes/ foot wears(we put them ON or OFF)

7 0
3 years ago
In order to consolidate your theoretical knowledge into technique and skills with practical and applicational value, you will us
Arisa [49]

Answer:

Check the explanation

Explanation:

Lasso: R example

To run Lasso Regression you can re-use the glmnet() function, but with the alpha parameter set to 1.

# Perform 10-fold cross-validation to select lambda --------------------------- lambdas_to_try <- 10^seq(-3, 5, length.out = 100) # Setting alpha = 1 implements lasso regression lasso_cv <- cv.glmnet(X, y, alpha = 1, lambda = lambdas_to_try, standardize = TRUE, nfolds = 10) # Plot cross-validation results plot(lasso_cv)

Best cross-validated lambda lambda_cv <- lasso_cv$lambda.min # Fit final model, get its sum of squared residuals and multiple R-squared model_cv <- glmnet(X, y, alpha = 1, lambda = lambda_cv, standardize = TRUE) y_hat_cv <- predict(model_cv, X) ssr_cv <- t(y - y_hat_cv) %*% (y - y_hat_cv) rsq_lasso_cv <- cor(y, y_hat_cv)^2 # See how increasing lambda shrinks the coefficients -------------------------- # Each line shows coefficients for one variables, for different lambdas. # The higher the lambda, the more the coefficients are shrinked towards zero. res <- glmnet(X, y, alpha = 1, lambda = lambdas_to_try, standardize = FALSE) plot(res, xvar = "lambda") legend("bottomright", lwd = 1, col = 1:6, legend = colnames(X), cex = .7)

Kindly check the Image below.

5 0
3 years ago
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